7 classes are annotated with EntityUsageTrack in Entity Usage 8.3

BlockField in src/Plugin/EntityUsage/Track/BlockField.php

Tracks usage of entities related in block_field fields.

DynamicEntityReference in src/Plugin/EntityUsage/Track/DynamicEntityReference.php

Tracks usage of entities related in dynamic_entity_reference fields.

EntityEmbed in src/Plugin/EntityUsage/Track/EntityEmbed.php

Tracks usage of entities related in entity_reference fields.

EntityReference in src/Plugin/EntityUsage/Track/EntityReference.php

Tracks usage of entities related in entity_reference fields.

HtmlLink in src/Plugin/EntityUsage/Track/HtmlLink.php

Tracks usage of entities referenced from regular HTML Links.

Link in src/Plugin/EntityUsage/Track/Link.php

Tracks usage of entities related in Link fields.

LinkIt in src/Plugin/EntityUsage/Track/LinkIt.php

Tracks usage of entities related in entity_reference fields.