All classes that implement AccountInterface in Drupal 9

class \Drupal\Core\Session\AccountProxy implements AccountProxyInterface uses DependencySerializationTrait
class \Drupal\Core\Session\AnonymousUserSession
class \Drupal\Core\Session\UserSession implements AccountInterface
class \Drupal\simple_oauth\Authentication\TokenAuthUser implements TokenAuthUserInterface
class \Drupal\social_user\Entity\User uses EntityUrlLanguageTrait
class \Drupal\social_user\Entity\User uses EntityUrlLanguageTrait
class \Drupal\social_user\Entity\User uses EntityUrlLanguageTrait
class \Drupal\social_user\Entity\User uses EntityUrlLanguageTrait
class \Drupal\user\Entity\User implements UserInterface uses EntityChangedTrait

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