13 files declare their use of SchemaRatingBase in Schema.org Metatag 8

SchemaArticleAggregateRating.php in schema_article/src/Plugin/metatag/Tag/SchemaArticleAggregateRating.php

SchemaBookAggregateRating.php in schema_book/src/Plugin/metatag/Tag/SchemaBookAggregateRating.php

SchemaEventAggregateRating.php in schema_event/src/Plugin/metatag/Tag/SchemaEventAggregateRating.php

SchemaImageObjectAggregateRating.php in schema_image_object/src/Plugin/metatag/Tag/SchemaImageObjectAggregateRating.php

SchemaMetatagTestAggregateRating.php in tests/modules/schema_metatag_test/src/Plugin/metatag/Tag/SchemaMetatagTestAggregateRating.php

SchemaMovieAggregateRating.php in schema_movie/src/Plugin/metatag/Tag/SchemaMovieAggregateRating.php

SchemaOrganizationAggregateRating.php in schema_organization/src/Plugin/metatag/Tag/SchemaOrganizationAggregateRating.php

SchemaOrganizationStarRating.php in schema_organization/src/Plugin/metatag/Tag/SchemaOrganizationStarRating.php

SchemaProductAggregateRating.php in schema_product/src/Plugin/metatag/Tag/SchemaProductAggregateRating.php

SchemaRecipeAggregateRating.php in schema_recipe/src/Plugin/metatag/Tag/SchemaRecipeAggregateRating.php

SchemaReviewReviewRating.php in schema_review/src/Plugin/metatag/Tag/SchemaReviewReviewRating.php

SchemaServiceAggregateRating.php in schema_service/src/Plugin/metatag/Tag/SchemaServiceAggregateRating.php

SchemaVideoObjectAggregateRating.php in schema_video_object/src/Plugin/metatag/Tag/SchemaVideoObjectAggregateRating.php