6 files declare their use of EntityListBuilder in Zircon Profile 8

BlockContentListBuilder.php in core/modules/block_content/src/BlockContentListBuilder.php

Contains \Drupal\block_content\BlockContentListBuilder.

ConfigEntityListBuilder.php in core/lib/Drupal/Core/Config/Entity/ConfigEntityListBuilder.php

Contains \Drupal\Core\Config\Entity\ConfigEntityListBuilder.

EntityListBuilderTest.php in core/tests/Drupal/Tests/Core/Entity/EntityListBuilderTest.php

Contains \Drupal\Tests\Core\Entity\EntityListBuilderTest.

EntityTestListBuilder.php in core/modules/system/tests/modules/entity_test/src/EntityTestListBuilder.php

Contains \Drupal\entity_test\EntityTestListBuilder.

NodeListBuilder.php in core/modules/node/src/NodeListBuilder.php

Contains \Drupal\node\NodeListBuilder.

UserListBuilder.php in core/modules/user/src/UserListBuilder.php

Contains \Drupal\user\UserListBuilder.