6 classes are annotated with GroupContentEnabler in Group 8

EntityTestAsContent in tests/modules/group_test_plugin/src/Plugin/GroupContentEnabler/EntityTestAsContent.php

Provides a content enabler for test entities.

GroupAsContent in tests/modules/group_test_plugin/src/Plugin/GroupContentEnabler/GroupAsContent.php

Provides a content enabler for groups.

GroupMembership in src/Plugin/GroupContentEnabler/GroupMembership.php

Provides a content enabler for users.

GroupNode in modules/gnode/src/Plugin/GroupContentEnabler/GroupNode.php

Provides a content enabler for nodes.

NodeAsContent in tests/modules/group_test_plugin/src/Plugin/GroupContentEnabler/NodeAsContent.php

Provides a content enabler for nodes.

UserAsContent in tests/modules/group_test_plugin/src/Plugin/GroupContentEnabler/UserAsContent.php

Provides a content enabler for users.