diff --git a/README.md b/README.md
index 113885d2a89..359f08f16c7 100644
--- a/README.md
+++ b/README.md
@@ -108,7 +108,13 @@ Do you need to upgrade to **Symfony 4.0**, for example?
 4. What does loaded Rectors do?
 
     ```bash
-    vendor/bin/rector describe  --level symfony33
+    vendor/bin/rector describe --level symfony33
+    ```
+
+5. What all Rectors do?
+
+    ```bash
+    vendor/bin/rector describe --all
     ```
 
 ### B. Custom Sets
diff --git a/composer.json b/composer.json
index 2653e2cc13b..6eaa5d60448 100644
--- a/composer.json
+++ b/composer.json
@@ -79,7 +79,7 @@
             "bin/clean_levels.sh"
         ],
         "phpstan": "vendor/bin/phpstan analyse packages src tests --level max",
-        "update-docs": "bin/rector describe --level all --format md > docs/AllRectorsOverview.md",
+        "update-docs": "bin/rector describe --all --format md > docs/AllRectorsOverview.md",
         "changelog": [
             "vendor/bin/changelog-linker dump-merges --in-categories",
             "vendor/bin/changelog-linker linkify"
diff --git a/config/level/all.yml b/config/level/all.yml
deleted file mode 100644
index 39e5505d3d7..00000000000
--- a/config/level/all.yml
+++ /dev/null
@@ -1,2 +0,0 @@
-imports:
-    - { resource: '*/*.yml' }
diff --git a/docs/AllRectorsOverview.md b/docs/AllRectorsOverview.md
index 8095730f175..e6ea249f3e2 100644
--- a/docs/AllRectorsOverview.md
+++ b/docs/AllRectorsOverview.md
@@ -1,6 +1,10 @@
 # All Rectors Overview
 
-## Rector\Rector\Assign\PropertyAssignToMethodCallRector
+## Assign
+
+### `PropertyAssignToMethodCallRector`
+
+- class: `Rector\Rector\Assign\PropertyAssignToMethodCallRector`
 
 Turns property assign of specific type and property name to method call
 
@@ -9,7 +13,11 @@ Turns property assign of specific type and property name to method call
 +$control->newMethodCall(false);
 ```
 
-## Rector\Rector\Dynamic\NamespaceReplacerRector
+## Dynamic
+
+### `NamespaceReplacerRector`
+
+- class: `Rector\Rector\Dynamic\NamespaceReplacerRector`
 
 [Dynamic] Replaces old namespace by new one.
 
@@ -18,7 +26,9 @@ Turns property assign of specific type and property name to method call
 +$someObject = new SomeNewNamespace\SomeClass;
 ```
 
-## Rector\Rector\Dynamic\ReturnTypehintRector
+### `ReturnTypehintRector`
+
+- class: `Rector\Rector\Dynamic\ReturnTypehintRector`
 
 [Dynamic] Changes defined return typehint of method and class.
 
@@ -30,7 +40,9 @@ Turns property assign of specific type and property name to method call
  }
 ```
 
-## Rector\Rector\Dynamic\FluentReplaceRector
+### `FluentReplaceRector`
+
+- class: `Rector\Rector\Dynamic\FluentReplaceRector`
 
 [Dynamic] Turns fluent interfaces to classic ones.
 
@@ -55,7 +67,9 @@ Turns property assign of specific type and property name to method call
 +    $someClass->otherFunction();
 ```
 
-## Rector\Rector\Dynamic\FunctionToMethodCallRector
+### `FunctionToMethodCallRector`
+
+- class: `Rector\Rector\Dynamic\FunctionToMethodCallRector`
 
 [Dynamic] Turns defined function calls to local method calls.
 
@@ -64,7 +78,9 @@ Turns property assign of specific type and property name to method call
 +$this->render("...", []);
 ```
 
-## Rector\Rector\Dynamic\ArgumentAdderRector
+### `ArgumentAdderRector`
+
+- class: `Rector\Rector\Dynamic\ArgumentAdderRector`
 
 [Dynamic] This Rector adds new default arguments in calls of defined methods and class types.
 
@@ -82,7 +98,9 @@ Turns property assign of specific type and property name to method call
  }
 ```
 
-## Rector\Rector\Dynamic\ClassReplacerRector
+### `ClassReplacerRector`
+
+- class: `Rector\Rector\Dynamic\ClassReplacerRector`
 
 [Dynamic] Replaces defined classes by new ones.
 
@@ -91,7 +109,9 @@ Turns property assign of specific type and property name to method call
 +$value = new SomeNewClass;
 ```
 
-## Rector\Rector\Dynamic\PropertyToMethodRector
+### `PropertyToMethodRector`
+
+- class: `Rector\Rector\Dynamic\PropertyToMethodRector`
 
 [Dynamic] Replaces properties assign calls be defined methods.
 
@@ -102,7 +122,9 @@ Turns property assign of specific type and property name to method call
 +$object->setProperty($value);
 ```
 
-## Rector\Rector\Dynamic\MethodNameReplacerRector
+### `MethodNameReplacerRector`
+
+- class: `Rector\Rector\Dynamic\MethodNameReplacerRector`
 
 [Dynamic] Turns method names to new ones.
 
@@ -115,7 +137,9 @@ Turns property assign of specific type and property name to method call
 +SomeClass::newStaticMethod();
 ```
 
-## Rector\Rector\Dynamic\PropertyNameReplacerRector
+### `PropertyNameReplacerRector`
+
+- class: `Rector\Rector\Dynamic\PropertyNameReplacerRector`
 
 [Dynamic] Replaces defined old properties by new ones.
 
@@ -124,7 +148,9 @@ Turns property assign of specific type and property name to method call
 +$someObject->someNewProperty;
 ```
 
-## Rector\Rector\Dynamic\ArgumentRemoverRector
+### `ArgumentRemoverRector`
+
+- class: `Rector\Rector\Dynamic\ArgumentRemoverRector`
 
 [Dynamic] Removes defined arguments in defined methods and their calls.
 
@@ -134,7 +160,9 @@ Turns property assign of specific type and property name to method call
 +$someObject->someMethod();'
 ```
 
-## Rector\Rector\Dynamic\ArgumentDefaultValueReplacerRector
+### `ArgumentDefaultValueReplacerRector`
+
+- class: `Rector\Rector\Dynamic\ArgumentDefaultValueReplacerRector`
 
 [Dynamic] Replaces defined map of arguments in defined methods and their calls.
 
@@ -144,7 +172,9 @@ Turns property assign of specific type and property name to method call
 +$someObject->someMethod(false);'
 ```
 
-## Rector\Rector\Dynamic\AnnotationReplacerRector
+### `AnnotationReplacerRector`
+
+- class: `Rector\Rector\Dynamic\AnnotationReplacerRector`
 
 [Dynamic] Turns defined annotations above properties and methods to their new values.
 
@@ -154,7 +184,9 @@ Turns property assign of specific type and property name to method call
  public function someMethod() {};
 ```
 
-## Rector\Rector\Dynamic\PseudoNamespaceToNamespaceRector
+### `PseudoNamespaceToNamespaceRector`
+
+- class: `Rector\Rector\Dynamic\PseudoNamespaceToNamespaceRector`
 
 [Dynamic] Replaces defined Pseudo_Namespaces by Namespace\Ones.
 
@@ -163,7 +195,9 @@ Turns property assign of specific type and property name to method call
 +$someServie = Some\Object;
 ```
 
-## Rector\Rector\Dynamic\ParentTypehintedArgumentRector
+### `ParentTypehintedArgumentRector`
+
+- class: `Rector\Rector\Dynamic\ParentTypehintedArgumentRector`
 
 [Dynamic] Changes defined parent class typehints.
 
@@ -180,7 +214,22 @@ Turns property assign of specific type and property name to method call
  }
 ```
 
-## Rector\Rector\Dynamic\ValueObjectRemover\ValueObjectRemoverDocBlockRector
+### `ClassConstantReplacerRector`
+
+- class: `Rector\Rector\Dynamic\ClassConstantReplacerRector`
+
+[Dynamic] Replaces defined class constants in their calls.
+
+```diff
+-$value = SomeClass::OLD_CONSTANT;
++$value = SomeClass::NEW_CONSTANT;
+```
+
+## ValueObjectRemover
+
+### `ValueObjectRemoverDocBlockRector`
+
+- class: `Rector\Rector\Dynamic\ValueObjectRemover\ValueObjectRemoverDocBlockRector`
 
 Turns defined value object to simple types in doc blocks
 
@@ -196,7 +245,9 @@ Turns defined value object to simple types in doc blocks
  $name;
 ```
 
-## Rector\Rector\Dynamic\ValueObjectRemover\ValueObjectRemoverRector
+### `ValueObjectRemoverRector`
+
+- class: `Rector\Rector\Dynamic\ValueObjectRemover\ValueObjectRemoverRector`
 
 [Dynamic] Remove values objects and use directly the value.
 
@@ -214,16 +265,11 @@ Turns defined value object to simple types in doc blocks
 +function someFunction(): ?string { }
 ```
 
-## Rector\Rector\Dynamic\ClassConstantReplacerRector
+## MethodCall
 
-[Dynamic] Replaces defined class constants in their calls.
+### `MethodCallToAnotherMethodCallWithArgumentsRector`
 
-```diff
--$value = SomeClass::OLD_CONSTANT;
-+$value = SomeClass::NEW_CONSTANT;
-```
-
-## Rector\Rector\MethodCall\MethodCallToAnotherMethodCallWithArgumentsRector
+- class: `Rector\Rector\MethodCall\MethodCallToAnotherMethodCallWithArgumentsRector`
 
 Turns old method call with specfici type to new one with arguments
 
@@ -234,7 +280,11 @@ Turns old method call with specfici type to new one with arguments
 +$serviceDefinition->addTag('inject');
 ```
 
-## Rector\Rector\MagicDisclosure\ToStringToMethodCallRector
+## MagicDisclosure
+
+### `ToStringToMethodCallRector`
+
+- class: `Rector\Rector\MagicDisclosure\ToStringToMethodCallRector`
 
 [Dynamic] Turns defined __toString() to specific method calls.
 
@@ -246,7 +296,9 @@ Turns old method call with specfici type to new one with arguments
 +$result = $someValue->someMethod();
 ```
 
-## Rector\Rector\MagicDisclosure\GetAndSetToMethodCallRector
+### `GetAndSetToMethodCallRector`
+
+- class: `Rector\Rector\MagicDisclosure\GetAndSetToMethodCallRector`
 
 [Dynamic] Turns defined `__get`/`__set` to specific method calls.
 
@@ -258,7 +310,9 @@ Turns old method call with specfici type to new one with arguments
 +$container->setService("someService", $someService);
 ```
 
-## Rector\Rector\MagicDisclosure\UnsetAndIssetToMethodCallRector
+### `UnsetAndIssetToMethodCallRector`
+
+- class: `Rector\Rector\MagicDisclosure\UnsetAndIssetToMethodCallRector`
 
 [Dynamic] Turns defined `__isset`/`__unset` calls to specific method calls.
 
@@ -270,7 +324,11 @@ Turns old method call with specfici type to new one with arguments
 +$container->removeService("someKey");
 ```
 
-## Rector\Rector\Architecture\DependencyInjection\AnnotatedPropertyInjectToConstructorInjectionRector
+## DependencyInjection
+
+### `AnnotatedPropertyInjectToConstructorInjectionRector`
+
+- class: `Rector\Rector\Architecture\DependencyInjection\AnnotatedPropertyInjectToConstructorInjectionRector`
 
 Turns non-private properties with @annotation to private properties and constructor injection
 
@@ -288,7 +346,9 @@ Turns non-private properties with @annotation to private properties and construc
 +}
 ```
 
-## Rector\Rector\Architecture\DependencyInjection\ReplaceVariableByPropertyFetchRector
+### `ReplaceVariableByPropertyFetchRector`
+
+- class: `Rector\Rector\Architecture\DependencyInjection\ReplaceVariableByPropertyFetchRector`
 
 Turns variable in controller action to property fetch, as follow up to action injection variable to property change.
 
@@ -313,7 +373,9 @@ Turns variable in controller action to property fetch, as follow up to action in
  }
 ```
 
-## Rector\Rector\Architecture\DependencyInjection\ActionInjectionToConstructorInjectionRector
+### `ActionInjectionToConstructorInjectionRector`
+
+- class: `Rector\Rector\Architecture\DependencyInjection\ActionInjectionToConstructorInjectionRector`
 
 Turns action injection in Controllers to constructor injection
 
@@ -338,7 +400,11 @@ Turns action injection in Controllers to constructor injection
  }
 ```
 
-## Rector\Rector\Architecture\RepositoryAsService\ReplaceParentRepositoryCallsByRepositoryPropertyRector
+## RepositoryAsService
+
+### `ReplaceParentRepositoryCallsByRepositoryPropertyRector`
+
+- class: `Rector\Rector\Architecture\RepositoryAsService\ReplaceParentRepositoryCallsByRepositoryPropertyRector`
 
 Handles method calls in child of Doctrine EntityRepository and moves them to "$this->repository" property.
 
@@ -357,7 +423,9 @@ Handles method calls in child of Doctrine EntityRepository and moves them to "$t
  }
 ```
 
-## Rector\Rector\Architecture\RepositoryAsService\ServiceLocatorToDIRector
+### `ServiceLocatorToDIRector`
+
+- class: `Rector\Rector\Architecture\RepositoryAsService\ServiceLocatorToDIRector`
 
 Turns "$this->getRepository()" in Symfony Controller to constructor injection and private property access.
 
@@ -383,7 +451,9 @@ Turns "$this->getRepository()" in Symfony Controller to constructor injection an
  }
 ```
 
-## Rector\Rector\Architecture\RepositoryAsService\MoveRepositoryFromParentToConstructorRector
+### `MoveRepositoryFromParentToConstructorRector`
+
+- class: `Rector\Rector\Architecture\RepositoryAsService\MoveRepositoryFromParentToConstructorRector`
 
 Turns parent EntityRepository class to constructor dependency
 
@@ -407,7 +477,11 @@ Turns parent EntityRepository class to constructor dependency
  }
 ```
 
-## Rector\Rector\Interface_\MergeInterfacesRector
+## Interface_
+
+### `MergeInterfacesRector`
+
+- class: `Rector\Rector\Interface_\MergeInterfacesRector`
 
 Merges old interface to a new one, that already has its methods
 
@@ -418,7 +492,11 @@ Merges old interface to a new one, that already has its methods
  }
 ```
 
-## Rector\Rector\Visibility\ChangeMethodVisibilityRector
+## Visibility
+
+### `ChangeMethodVisibilityRector`
+
+- class: `Rector\Rector\Visibility\ChangeMethodVisibilityRector`
 
 Change visibility of method from parent class.
 
@@ -439,7 +517,9 @@ Change visibility of method from parent class.
  }
 ```
 
-## Rector\Rector\Visibility\ChangePropertyVisibilityRector
+### `ChangePropertyVisibilityRector`
+
+- class: `Rector\Rector\Visibility\ChangePropertyVisibilityRector`
 
 Change visibility of property from parent class.
 
@@ -456,7 +536,9 @@ Change visibility of property from parent class.
  }
 ```
 
-## Rector\Rector\Visibility\ChangeConstantVisibilityRector
+### `ChangeConstantVisibilityRector`
+
+- class: `Rector\Rector\Visibility\ChangeConstantVisibilityRector`
 
 Change visibility of constant from parent class.
 
@@ -473,7 +555,11 @@ Change visibility of constant from parent class.
  }
 ```
 
-## Rector\Rector\CodeQuality\InArrayAndArrayKeysToArrayKeyExistsRector
+## CodeQuality
+
+### `InArrayAndArrayKeysToArrayKeyExistsRector`
+
+- class: `Rector\Rector\CodeQuality\InArrayAndArrayKeysToArrayKeyExistsRector`
 
 Simplify `in_array` and `array_keys` functions combination into `array_key_exists` when `array_keys` has one argument only
 
@@ -482,7 +568,9 @@ Simplify `in_array` and `array_keys` functions combination into `array_key_exist
 +array_key_exists("key", $array);
 ```
 
-## Rector\Rector\CodeQuality\UnnecessaryTernaryExpressionRector
+### `UnnecessaryTernaryExpressionRector`
+
+- class: `Rector\Rector\CodeQuality\UnnecessaryTernaryExpressionRector`
 
 Remove unnecessary ternary expressions.
 
@@ -491,7 +579,11 @@ Remove unnecessary ternary expressions.
 +$foo === $bar;
 ```
 
-## Rector\Rector\Constant\RenameClassConstantsUseToStringsRector
+## Constant
+
+### `RenameClassConstantsUseToStringsRector`
+
+- class: `Rector\Rector\Constant\RenameClassConstantsUseToStringsRector`
 
 Replaces constant by value
 
@@ -500,7 +592,11 @@ Replaces constant by value
 +$value === "development"
 ```
 
-## Rector\Rector\Class_\ParentClassToTraitsRector
+## Class_
+
+### `ParentClassToTraitsRector`
+
+- class: `Rector\Rector\Class_\ParentClassToTraitsRector`
 
 Replaces parent class to specific traits
 
@@ -512,7 +608,11 @@ Replaces parent class to specific traits
  }
 ```
 
-## Rector\YamlRector\Rector\ReplaceStringYamlRector
+## Rector
+
+### `ReplaceStringYamlRector`
+
+- class: `Rector\YamlRector\Rector\ReplaceStringYamlRector`
 
 Replaces one string by another. Use only for very specific strings only.
 
@@ -520,7 +620,9 @@ Replaces one string by another. Use only for very specific strings only.
 
 ```
 
-## Rector\YamlRector\Rector\ReplaceValueYamlRector
+### `ReplaceValueYamlRector`
+
+- class: `Rector\YamlRector\Rector\ReplaceValueYamlRector`
 
 Replaces specifically nested key value by another.
 
@@ -528,7 +630,9 @@ Replaces specifically nested key value by another.
 
 ```
 
-## Rector\YamlRector\Rector\RenameSubKeyYamlRector
+### `RenameSubKeyYamlRector`
+
+- class: `Rector\YamlRector\Rector\RenameSubKeyYamlRector`
 
 Replaces specifically nested key by another.
 
@@ -537,7 +641,11 @@ Replaces specifically nested key by another.
 +key > another_key > new_key: value
 ```
 
-## Rector\PHPUnit\Rector\ExceptionAnnotationRector
+## PHPUnit
+
+### `ExceptionAnnotationRector`
+
+- class: `Rector\PHPUnit\Rector\ExceptionAnnotationRector`
 
 Takes `setExpectedException()` 2nd and next arguments to own methods in PHPUnit.
 
@@ -554,7 +662,58 @@ Takes `setExpectedException()` 2nd and next arguments to own methods in PHPUnit.
  }
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertNotOperatorRector
+### `DelegateExceptionArgumentsRector`
+
+- class: `Rector\PHPUnit\Rector\DelegateExceptionArgumentsRector`
+
+Takes `setExpectedException()` 2nd and next arguments to own methods in PHPUnit.
+
+```diff
+-$this->setExpectedException(Exception::class, "Message", "CODE");
++$this->setExpectedException(Exception::class);
++$this->expectExceptionMessage("Message");
++$this->expectExceptionCode("CODE");
+```
+
+### `ArrayToYieldDataProviderRector`
+
+- class: `Rector\PHPUnit\Rector\ArrayToYieldDataProviderRector`
+
+Turns method data providers in PHPUnit from arrays to yield
+
+```diff
+ /**
+- * @return mixed[]
+  */
+-public function provide(): array
++public function provide(): Iterator
+ {
+-    return [
+-        ['item']
+-    ]
++    yield ['item'];
+ }
+```
+
+### `GetMockRector`
+
+- class: `Rector\PHPUnit\Rector\GetMockRector`
+
+Turns getMock*() methods to createMock()
+
+```diff
+-$this->getMock("Class")
++$this->createMock("Class")
+
+-$this->getMockWithoutInvokingTheOriginalConstructor("Class")
++$this->createMock("Class"
+```
+
+## PHPUnit\SpecificMethod
+
+### `AssertNotOperatorRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertNotOperatorRector`
 
 Turns not-operator comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -566,7 +725,9 @@ Turns not-operator comparisons to their method name alternatives in PHPUnit Test
 +$this->assertTrue($foo, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertComparisonToSpecificMethodRector
+### `AssertComparisonToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertComparisonToSpecificMethodRector`
 
 Turns comparison operations to their method name alternatives in PHPUnit TestCase
 
@@ -578,7 +739,9 @@ Turns comparison operations to their method name alternatives in PHPUnit TestCas
 +$this->assertLessThanOrEqual($bar, $foo, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertPropertyExistsRector
+### `AssertPropertyExistsRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertPropertyExistsRector`
 
 Turns `property_exists` comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -590,7 +753,9 @@ Turns `property_exists` comparisons to their method name alternatives in PHPUnit
 +$this->assertClassNotHasAttribute("property", "Class", "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertTrueFalseInternalTypeToSpecificMethodRector
+### `AssertTrueFalseInternalTypeToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertTrueFalseInternalTypeToSpecificMethodRector`
 
 Turns true/false with internal type comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -602,7 +767,9 @@ Turns true/false with internal type comparisons to their method name alternative
 +$this->assertNotInternalType({internal_type}, $anything, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertIssetToSpecificMethodRector
+### `AssertIssetToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertIssetToSpecificMethodRector`
 
 Turns isset comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -614,7 +781,9 @@ Turns isset comparisons to their method name alternatives in PHPUnit TestCase
 +$this->assertArrayNotHasKey("foo", $anything, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertFalseStrposToContainsRector
+### `AssertFalseStrposToContainsRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertFalseStrposToContainsRector`
 
 Turns `strpos`/`stripos` comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -626,7 +795,9 @@ Turns `strpos`/`stripos` comparisons to their method name alternatives in PHPUni
 +$this->assertContains("foo", $anything, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertSameBoolNullToSpecificMethodRector
+### `AssertSameBoolNullToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertSameBoolNullToSpecificMethodRector`
 
 Turns same bool and null comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -638,7 +809,9 @@ Turns same bool and null comparisons to their method name alternatives in PHPUni
 +$this->assertNotFalse($anything);
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertCompareToSpecificMethodRector
+### `AssertCompareToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertCompareToSpecificMethodRector`
 
 Turns vague php-only method in PHPUnit TestCase to more specific
 
@@ -659,7 +832,9 @@ Turns vague php-only method in PHPUnit TestCase to more specific
 +$this->assertNot{function}($value, $anything, "message")
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertRegExpRector
+### `AssertRegExpRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertRegExpRector`
 
 Turns `preg_match` comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -671,7 +846,9 @@ Turns `preg_match` comparisons to their method name alternatives in PHPUnit Test
 +$this->assertNotRegExp("/^Message for ".*"\.$/", $string, $message);
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertInstanceOfComparisonRector
+### `AssertInstanceOfComparisonRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertInstanceOfComparisonRector`
 
 Turns instanceof comparisons to their method name alternatives in PHPUnit TestCase
 
@@ -683,7 +860,9 @@ Turns instanceof comparisons to their method name alternatives in PHPUnit TestCa
 +$this->assertNotInstanceOf("Foo", $foo, "message");
 ```
 
-## Rector\PHPUnit\Rector\SpecificMethod\AssertTrueFalseToSpecificMethodRector
+### `AssertTrueFalseToSpecificMethodRector`
+
+- class: `Rector\PHPUnit\Rector\SpecificMethod\AssertTrueFalseToSpecificMethodRector`
 
 Turns true/false comparisons to their method name alternatives in PHPUnit TestCase when possible
 
@@ -692,48 +871,11 @@ Turns true/false comparisons to their method name alternatives in PHPUnit TestCa
 +$this->assertIsReadable($readmeFile, "message");
 ```
 
-## Rector\PHPUnit\Rector\DelegateExceptionArgumentsRector
+## Sylius\Review
 
-Takes `setExpectedException()` 2nd and next arguments to own methods in PHPUnit.
+### `ReplaceCreateMethodWithoutReviewerRector`
 
-```diff
--$this->setExpectedException(Exception::class, "Message", "CODE");
-+$this->setExpectedException(Exception::class);
-+$this->expectExceptionMessage("Message");
-+$this->expectExceptionCode("CODE");
-```
-
-## Rector\PHPUnit\Rector\ArrayToYieldDataProviderRector
-
-Turns method data providers in PHPUnit from arrays to yield
-
-```diff
- /**
-- * @return mixed[]
-  */
--public function provide(): array
-+public function provide(): Iterator
- {
--    return [
--        ['item']
--    ]
-+    yield ['item'];
- }
-```
-
-## Rector\PHPUnit\Rector\GetMockRector
-
-Turns getMock*() methods to createMock()
-
-```diff
--$this->getMock("Class")
-+$this->createMock("Class")
-
--$this->getMockWithoutInvokingTheOriginalConstructor("Class")
-+$this->createMock("Class"
-```
-
-## Rector\Sylius\Rector\Review\ReplaceCreateMethodWithoutReviewerRector
+- class: `Rector\Sylius\Rector\Review\ReplaceCreateMethodWithoutReviewerRector`
 
 Turns `createForSubjectWithReviewer()` with null review to standalone method in Sylius
 
@@ -742,7 +884,11 @@ Turns `createForSubjectWithReviewer()` with null review to standalone method in
 +$this->createForSubject($subject)
 ```
 
-## Rector\Symfony\Rector\HttpKernel\GetRequestRector
+## Symfony\HttpKernel
+
+### `GetRequestRector`
+
+- class: `Rector\Symfony\Rector\HttpKernel\GetRequestRector`
 
 Turns fetching of dependencies via `$this->get()` to constructor injection in Command and Controller in Symfony
 
@@ -760,7 +906,11 @@ Turns fetching of dependencies via `$this->get()` to constructor injection in Co
  }
 ```
 
-## Rector\Symfony\Rector\Controller\AddFlashRector
+## Symfony\Controller
+
+### `AddFlashRector`
+
+- class: `Rector\Symfony\Rector\Controller\AddFlashRector`
 
 Turns long flash adding to short helper method in Controller in Symfony
 
@@ -775,7 +925,9 @@ Turns long flash adding to short helper method in Controller in Symfony
  }
 ```
 
-## Rector\Symfony\Rector\Controller\RedirectToRouteRector
+### `RedirectToRouteRector`
+
+- class: `Rector\Symfony\Rector\Controller\RedirectToRouteRector`
 
 Turns redirect to route to short helper method in Controller in Symfony
 
@@ -784,7 +936,9 @@ Turns redirect to route to short helper method in Controller in Symfony
 +$this->redirectToRoute("homepage");
 ```
 
-## Rector\Symfony\Rector\Controller\ActionSuffixRemoverRector
+### `ActionSuffixRemoverRector`
+
+- class: `Rector\Symfony\Rector\Controller\ActionSuffixRemoverRector`
 
 Removes Action suffixes from methods in Symfony Controllers
 
@@ -798,7 +952,11 @@ Removes Action suffixes from methods in Symfony Controllers
  }
 ```
 
-## Rector\Symfony\Rector\Validator\ConstraintUrlOptionRector
+## Symfony\Validator
+
+### `ConstraintUrlOptionRector`
+
+- class: `Rector\Symfony\Rector\Validator\ConstraintUrlOptionRector`
 
 Turns true value to `Url::CHECK_DNS_TYPE_ANY` in Validator in Symfony.
 
@@ -807,7 +965,11 @@ Turns true value to `Url::CHECK_DNS_TYPE_ANY` in Validator in Symfony.
 +$constraint = new Url(["checkDNS" => Url::CHECK_DNS_TYPE_ANY]);
 ```
 
-## Rector\Symfony\Rector\Console\ConsoleExceptionToErrorEventConstantRector
+## Symfony\Console
+
+### `ConsoleExceptionToErrorEventConstantRector`
+
+- class: `Rector\Symfony\Rector\Console\ConsoleExceptionToErrorEventConstantRector`
 
 Turns old event name with EXCEPTION to ERROR constant in Console in Symfony
 
@@ -819,7 +981,11 @@ Turns old event name with EXCEPTION to ERROR constant in Console in Symfony
 +Symfony\Component\Console\ConsoleEvents::ERROR
 ```
 
-## Rector\Symfony\Rector\Yaml\SpaceBetweenKeyAndValueYamlRector
+## Symfony\Yaml
+
+### `SpaceBetweenKeyAndValueYamlRector`
+
+- class: `Rector\Symfony\Rector\Yaml\SpaceBetweenKeyAndValueYamlRector`
 
 Mappings with a colon (:) that is not followed by a whitespace will get one
 
@@ -828,7 +994,9 @@ Mappings with a colon (:) that is not followed by a whitespace will get one
 +key: value
 ```
 
-## Rector\Symfony\Rector\Yaml\SessionStrictTrueByDefaultYamlRector
+### `SessionStrictTrueByDefaultYamlRector`
+
+- class: `Rector\Symfony\Rector\Yaml\SessionStrictTrueByDefaultYamlRector`
 
 session > use_strict_mode is true by default and can be removed
 
@@ -837,7 +1005,11 @@ session > use_strict_mode is true by default and can be removed
 +session:
 ```
 
-## Rector\Symfony\Rector\DependencyInjection\ContainerBuilderCompileEnvArgumentRector
+## Symfony\DependencyInjection
+
+### `ContainerBuilderCompileEnvArgumentRector`
+
+- class: `Rector\Symfony\Rector\DependencyInjection\ContainerBuilderCompileEnvArgumentRector`
 
 Turns old default value to parameter in ContinerBuilder->build() method in DI in Symfony
 
@@ -846,7 +1018,11 @@ Turns old default value to parameter in ContinerBuilder->build() method in DI in
 +$containerBuilder = new Symfony\Component\DependencyInjection\ContainerBuilder(); $containerBuilder->compile(true);
 ```
 
-## Rector\Symfony\Rector\VarDumper\VarDumperTestTraitMethodArgsRector
+## Symfony\VarDumper
+
+### `VarDumperTestTraitMethodArgsRector`
+
+- class: `Rector\Symfony\Rector\VarDumper\VarDumperTestTraitMethodArgsRector`
 
 Adds new `$format` argument in `VarDumperTestTrait->assertDumpEquals()` in Validator in Symfony.
 
@@ -858,7 +1034,11 @@ Adds new `$format` argument in `VarDumperTestTrait->assertDumpEquals()` in Valid
 +VarDumperTestTrait->assertDumpMatchesFormat($dump, $format, $context = null,  $mesage = "");
 ```
 
-## Rector\Symfony\Rector\FrameworkBundle\GetParameterToConstructorInjectionRector
+## Symfony\FrameworkBundle
+
+### `GetParameterToConstructorInjectionRector`
+
+- class: `Rector\Symfony\Rector\FrameworkBundle\GetParameterToConstructorInjectionRector`
 
 Turns fetching of parameters via `getParameter()` in ContainerAware to constructor injection in Command and Controller in Symfony
 
@@ -881,7 +1061,9 @@ Turns fetching of parameters via `getParameter()` in ContainerAware to construct
  }
 ```
 
-## Rector\Symfony\Rector\FrameworkBundle\GetToConstructorInjectionRector
+### `GetToConstructorInjectionRector`
+
+- class: `Rector\Symfony\Rector\FrameworkBundle\GetToConstructorInjectionRector`
 
 Turns fetching of dependencies via `$this->get()` to constructor injection in Command and Controller in Symfony
 
@@ -903,7 +1085,9 @@ Turns fetching of dependencies via `$this->get()` to constructor injection in Co
  }
 ```
 
-## Rector\Symfony\Rector\FrameworkBundle\ContainerGetToConstructorInjectionRector
+### `ContainerGetToConstructorInjectionRector`
+
+- class: `Rector\Symfony\Rector\FrameworkBundle\ContainerGetToConstructorInjectionRector`
 
 Turns fetching of dependencies via `$container->get()` in ContainerAware to constructor injection in Command and Controller in Symfony
 
@@ -927,7 +1111,11 @@ Turns fetching of dependencies via `$container->get()` in ContainerAware to cons
  }
 ```
 
-## Rector\Symfony\Rector\Form\FormIsValidRector
+## Symfony\Form
+
+### `FormIsValidRector`
+
+- class: `Rector\Symfony\Rector\Form\FormIsValidRector`
 
 Adds `$form->isSubmitted()` validatoin to all `$form->isValid()` calls in Form in Symfony
 
@@ -936,7 +1124,9 @@ Adds `$form->isSubmitted()` validatoin to all `$form->isValid()` calls in Form i
 +if ($form->isSubmitted() && $form->isValid()) { ... };
 ```
 
-## Rector\Symfony\Rector\Form\OptionNameRector
+### `OptionNameRector`
+
+- class: `Rector\Symfony\Rector\Form\OptionNameRector`
 
 Turns old option names to new ones in FormTypes in Form in Symfony
 
@@ -945,7 +1135,9 @@ Turns old option names to new ones in FormTypes in Form in Symfony
 +$builder->add("...", ["scale" => "...", "inherit_data" => "..."];
 ```
 
-## Rector\Symfony\Rector\Form\StringFormTypeToClassRector
+### `StringFormTypeToClassRector`
+
+- class: `Rector\Symfony\Rector\Form\StringFormTypeToClassRector`
 
 Turns string Form Type references to their CONSTANT alternatives in FormTypes in Form in Symfony
 
@@ -954,7 +1146,9 @@ Turns string Form Type references to their CONSTANT alternatives in FormTypes in
 +$form->add("name", \Symfony\Component\Form\Extension\Core\Type\TextType::class);
 ```
 
-## Rector\Symfony\Rector\Form\FormTypeGetParentRector
+### `FormTypeGetParentRector`
+
+- class: `Rector\Symfony\Rector\Form\FormTypeGetParentRector`
 
 Turns string Form Type references to their CONSTANT alternatives in `getParent()` and `getExtendedType()` methods in Form in Symfony
 
@@ -966,7 +1160,11 @@ Turns string Form Type references to their CONSTANT alternatives in `getParent()
 +function getExtendedType() { return CollectionType::class; }
 ```
 
-## Rector\Symfony\Rector\Process\ProcessBuilderGetProcessRector
+## Symfony\Process
+
+### `ProcessBuilderGetProcessRector`
+
+- class: `Rector\Symfony\Rector\Process\ProcessBuilderGetProcessRector`
 
 Removes `$processBuilder->getProcess()` calls to $processBuilder in Process in Symfony, because ProcessBuilder was removed. This is part of multi-step Rector and has very narrow focus.
 
@@ -978,7 +1176,9 @@ Removes `$processBuilder->getProcess()` calls to $processBuilder in Process in S
 +$commamdLine = $processBuilder->getCommandLine();
 ```
 
-## Rector\Symfony\Rector\Process\ProcessBuilderInstanceRector
+### `ProcessBuilderInstanceRector`
+
+- class: `Rector\Symfony\Rector\Process\ProcessBuilderInstanceRector`
 
 Turns `ProcessBuilder::instance()` to new ProcessBuilder in Process in Symfony. Part of multi-step Rector.
 
@@ -987,7 +1187,11 @@ Turns `ProcessBuilder::instance()` to new ProcessBuilder in Process in Symfony.
 +$processBuilder = new Symfony\Component\Process\ProcessBuilder($args);
 ```
 
-## Rector\Doctrine\Rector\AliasToClassRector
+## Doctrine
+
+### `AliasToClassRector`
+
+- class: `Rector\Doctrine\Rector\AliasToClassRector`
 
 Replaces doctrine alias with class.
 
@@ -996,7 +1200,11 @@ Replaces doctrine alias with class.
 +$em->getRepository(\App\Entity\Post::class);
 ```
 
-## Rector\PhpParser\Rector\RemoveNodeRector
+## PhpParser
+
+### `RemoveNodeRector`
+
+- class: `Rector\PhpParser\Rector\RemoveNodeRector`
 
 Turns integer return to remove node to constant in NodeVisitor of PHP-Parser
 
@@ -1008,7 +1216,9 @@ Turns integer return to remove node to constant in NodeVisitor of PHP-Parser
  }
 ```
 
-## Rector\PhpParser\Rector\ParamAndStaticVarNameRector
+### `ParamAndStaticVarNameRector`
+
+- class: `Rector\PhpParser\Rector\ParamAndStaticVarNameRector`
 
 Turns old string `var` to `var->name` sub-variable in Node of PHP-Parser
 
@@ -1020,7 +1230,9 @@ Turns old string `var` to `var->name` sub-variable in Node of PHP-Parser
 +$staticVarNode->var->name;
 ```
 
-## Rector\PhpParser\Rector\IdentifierRector
+### `IdentifierRector`
+
+- class: `Rector\PhpParser\Rector\IdentifierRector`
 
 Turns node string names to Identifier object in php-parser
 
@@ -1030,7 +1242,9 @@ Turns node string names to Identifier object in php-parser
 +$name = $constNode->name->toString();'
 ```
 
-## Rector\PhpParser\Rector\CatchAndClosureUseNameRector
+### `CatchAndClosureUseNameRector`
+
+- class: `Rector\PhpParser\Rector\CatchAndClosureUseNameRector`
 
 Turns `$catchNode->var` to its new `name` property in php-parser
 
@@ -1039,7 +1253,9 @@ Turns `$catchNode->var` to its new `name` property in php-parser
 +$catchNode->var->name
 ```
 
-## Rector\PhpParser\Rector\SetLineRector
+### `SetLineRector`
+
+- class: `Rector\PhpParser\Rector\SetLineRector`
 
 Turns standalone line method to attribute in Node of PHP-Parser
 
@@ -1048,7 +1264,9 @@ Turns standalone line method to attribute in Node of PHP-Parser
 +$node->setAttribute("line", 5);
 ```
 
-## Rector\PhpParser\Rector\UseWithAliasRector
+### `UseWithAliasRector`
+
+- class: `Rector\PhpParser\Rector\UseWithAliasRector`
 
 Turns use property to method and `$node->alias` to last name in UseAlias Node of PHP-Parser
 
@@ -1060,7 +1278,11 @@ Turns use property to method and `$node->alias` to last name in UseAlias Node of
 +$node->alias
 ```
 
-## Rector\Sensio\Rector\FrameworkExtraBundle\TemplateAnnotationRector
+## Sensio\FrameworkExtraBundle
+
+### `TemplateAnnotationRector`
+
+- class: `Rector\Sensio\Rector\FrameworkExtraBundle\TemplateAnnotationRector`
 
 Turns @Template annotation to explicit method call in Controller of FrameworkExtraBundle in Symfony
 
diff --git a/src/Console/Command/DescribeCommand.php b/src/Console/Command/DescribeCommand.php
index be426d0a8f8..73f79451714 100644
--- a/src/Console/Command/DescribeCommand.php
+++ b/src/Console/Command/DescribeCommand.php
@@ -30,6 +30,11 @@ final class DescribeCommand extends Command
      */
     public const FORMAT_MARKDOWN = 'md';
 
+    /**
+     * @var string
+     */
+    private const OPTION_ALL = 'all';
+
     /**
      * @var string
      */
@@ -82,28 +87,21 @@ final class DescribeCommand extends Command
         $this->setDescription('Shows detailed description of loaded Rectors.');
         $this->addOption(Option::OPTION_NO_DIFFS, null, InputOption::VALUE_NONE, 'Hide examplary diffs.');
         $this->addOption(self::OPTION_FORMAT, null, InputOption::VALUE_REQUIRED, 'Output format.', self::FORMAT_CLI);
+        $this->addOption(self::OPTION_ALL, null, InputOption::VALUE_NONE, 'Describe all Rectors');
     }
 
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
-        $this->rectorGuard->ensureSomeRectorsAreRegistered();
-
-        $rectors = $this->getRectorsByInput($input);
+        if (! $input->getOption(self::OPTION_ALL)) {
+            $this->rectorGuard->ensureSomeRectorsAreRegistered();
+        }
 
         $outputFormat = $input->getOption(self::OPTION_FORMAT);
 
-        if ($outputFormat === self::FORMAT_MARKDOWN) {
-            if ($input->getOption(Option::OPTION_LEVEL) === 'all') {
-                $headline = '# All Rectors Overview';
-            } else {
-                $headline = '# Rectors Overview';
-            }
-            $this->consoleStyle->writeln($headline);
-            $this->consoleStyle->newLine();
-        }
+        $this->writeHeadline($input, $outputFormat);
 
         $this->describeCommandReporter->reportRectorsInFormat(
-            $rectors,
+            $this->getRectorsByInput($input),
             $outputFormat,
             ! $input->getOption(Option::OPTION_NO_DIFFS)
         );
@@ -116,25 +114,25 @@ final class DescribeCommand extends Command
      */
     private function getRectorsByInput(InputInterface $input): array
     {
-        if ($input->getOption(Option::OPTION_LEVEL) === 'all') {
-            $robotLoader = $this->createRobotLoaderForAllRectors();
-            $robotLoader->rebuild();
-
-            $rectors = [];
-            foreach ($robotLoader->getIndexedClasses() as $class => $filename) {
-                $reflectionClass = new ReflectionClass($class);
-                if ($reflectionClass->isAbstract()) {
-                    continue;
-                }
-
-                /** @var RectorInterface|YamlRectorInterface $rector */
-                $rectors[] = $reflectionClass->newInstanceWithoutConstructor();
-            }
-
-            return $rectors;
+        if (! $input->getOption(self::OPTION_ALL)) {
+            return $this->rectorNodeTraverser->getRectors() + $this->yamlFileProcessor->getYamlRectors();
         }
 
-        return $this->rectorNodeTraverser->getRectors() + $this->yamlFileProcessor->getYamlRectors();
+        $robotLoader = $this->createRobotLoaderForAllRectors();
+        $robotLoader->rebuild();
+
+        $rectors = [];
+        foreach ($robotLoader->getIndexedClasses() as $class => $filename) {
+            $reflectionClass = new ReflectionClass($class);
+            if ($reflectionClass->isAbstract()) {
+                continue;
+            }
+
+            /** @var RectorInterface|YamlRectorInterface $rector */
+            $rectors[] = $reflectionClass->newInstanceWithoutConstructor();
+        }
+
+        return $rectors;
     }
 
     private function createRobotLoaderForAllRectors(): RobotLoader
@@ -148,4 +146,15 @@ final class DescribeCommand extends Command
 
         return $robotLoader;
     }
+
+    private function writeHeadline(InputInterface $input, string $outputFormat): void
+    {
+        if ($outputFormat !== self::FORMAT_MARKDOWN) {
+            return;
+        }
+
+        $headline = $input->getOption(self::OPTION_ALL) ? '# All Rectors Overview' : '# Rectors Overview';
+        $this->consoleStyle->writeln($headline);
+        $this->consoleStyle->newLine();
+    }
 }
diff --git a/src/Console/Output/DescribeCommandReporter.php b/src/Console/Output/DescribeCommandReporter.php
index 827f2c2cb79..8a5b7efb8bd 100644
--- a/src/Console/Output/DescribeCommandReporter.php
+++ b/src/Console/Output/DescribeCommandReporter.php
@@ -2,6 +2,8 @@
 
 namespace Rector\Console\Output;
 
+use Nette\Utils\Arrays;
+use Nette\Utils\Strings;
 use Rector\Console\Command\DescribeCommand;
 use Rector\Console\ConsoleStyle;
 use Rector\ConsoleDiffer\MarkdownDifferAndFormatter;
@@ -33,11 +35,23 @@ final class DescribeCommandReporter
     public function reportRectorsInFormat(array $rectors, string $outputFormat, bool $showDiffs): void
     {
         $i = 0;
-        foreach ($rectors as $rector) {
-            if ($outputFormat === DescribeCommand::FORMAT_CLI) {
+        if ($outputFormat === DescribeCommand::FORMAT_CLI) {
+            foreach ($rectors as $rector) {
                 $this->printWithCliFormat(++$i, $showDiffs, $rector);
-            } elseif ($outputFormat === DescribeCommand::FORMAT_MARKDOWN) {
-                $this->printWithMarkdownFormat($showDiffs, $rector);
+            }
+            return;
+        }
+
+        if ($outputFormat === DescribeCommand::FORMAT_MARKDOWN) {
+            $rectorsByGroup = $this->groupRectors($rectors);
+
+            foreach ($rectorsByGroup as $group => $rectors) {
+                $this->consoleStyle->writeln('## ' . $group);
+                $this->consoleStyle->newLine();
+
+                foreach ($rectors as $rector) {
+                    $this->printWithMarkdownFormat($showDiffs, $rector);
+                }
             }
         }
     }
@@ -79,7 +93,14 @@ final class DescribeCommandReporter
      */
     private function printWithMarkdownFormat(bool $showDiffs, $rector): void
     {
-        $this->consoleStyle->writeln('## ' . get_class($rector));
+        $rectorClass = get_class($rector);
+        $rectorClassParts = explode('\\', $rectorClass);
+        $headline = $rectorClassParts[count($rectorClassParts) - 1];
+
+        $this->consoleStyle->writeln(sprintf('### `%s`', $headline));
+
+        $this->consoleStyle->newLine();
+        $this->consoleStyle->writeln(sprintf('- class: `%s`', $rectorClass));
 
         $rectorDefinition = $rector->getDefinition();
         if ($rectorDefinition->getDescription()) {
@@ -92,10 +113,9 @@ final class DescribeCommandReporter
             $this->consoleStyle->writeln('```diff');
 
             [$codeBefore, $codeAfter] = $this->joinBeforeAndAfter($rectorDefinition->getCodeSamples());
-
             $diff = $this->markdownDifferAndFormatter->bareDiffAndFormatWithoutColors($codeBefore, $codeAfter);
-
             $this->consoleStyle->write($diff);
+
             $this->consoleStyle->newLine();
             $this->consoleStyle->writeln('```');
         }
@@ -123,4 +143,42 @@ final class DescribeCommandReporter
 
         return [$codeBefore, $codeAfter];
     }
+
+    /**
+     * @param RectorInterface[]|YamlRectorInterface[] $rectors
+     * @return RectorInterface[][]|YamlRectorInterface[]
+     */
+    private function groupRectors(array $rectors): array
+    {
+        $rectorsByGroup = [];
+        foreach ($rectors as $rector) {
+            $rectorGroup = $this->detectGroupFromRectorClass(get_class($rector));
+            $rectorsByGroup[$rectorGroup][] = $rector;
+        }
+
+        return $rectorsByGroup;
+    }
+
+    private function detectGroupFromRectorClass($rectorClass)
+    {
+        $rectorClassParts = explode('\\', $rectorClass);
+
+        // basic Rectors
+        if (Strings::startsWith($rectorClass, 'Rector\Rector') || Strings::startsWith($rectorClass, 'Rector\YamlRector')) {
+            return $rectorClassParts[count($rectorClassParts) - 2];
+        }
+
+        // Rector/<PackageGroup>/Rector/SomeRector
+        if (count($rectorClassParts) === 4) {
+            return $rectorClassParts[1];
+        }
+
+        // Rector/<PackageGroup>/Rector/<PackageSubGroup>/SomeRector
+        if (count($rectorClassParts) === 5) {
+            return $rectorClassParts[1] . '\\' . $rectorClassParts[3];
+        }
+
+        // fallback
+        return $rectorClassParts[count($rectorClassParts) - 2];
+    }
 }