All classes that implement EntityStorageControllerInterface

class \Drupal\Core\Config\Entity\ConfigStorageController implements EntityStorageControllerInterface
class \Drupal\Core\Entity\DatabaseStorageController implements EntityStorageControllerInterface
class \Drupal\Core\Entity\DatabaseStorageControllerNG
class \Drupal\comment\CommentStorageController
class \Drupal\entity_test\EntityTestStorageController
class \Drupal\field_test\TestEntityController
class \Drupal\file\FileStorageController
class \Drupal\node\NodeStorageController
class \Drupal\taxonomy\TermStorageController
class \Drupal\taxonomy\VocabularyStorageController
class \Drupal\user\UserStorageController
class \Drupal\views\ViewStorageController