14 classes are annotated with ViewsRow in Drupal 8

DataEntityRow in core/modules/rest/src/Plugin/views/row/DataEntityRow.php

Plugin which displays entities as raw data.

DataFieldRow in core/modules/rest/src/Plugin/views/row/DataFieldRow.php

Plugin which displays fields as raw data.

EntityReference in core/modules/views/src/Plugin/views/row/EntityReference.php

EntityReference row plugin.

EntityRow in core/modules/views/src/Plugin/views/row/EntityRow.php

Generic entity row plugin to provide a common base for all entity types.

Fields in core/modules/views/src/Plugin/views/row/Fields.php

The basic 'fields' row plugin

NodeRow in core/modules/node/src/Plugin/views/row/NodeRow.php

Plugin which performs a node_view on the resulting object.

OpmlFields in core/modules/views/src/Plugin/views/row/OpmlFields.php

Renders an OPML item based on fields.

RowTest in core/modules/views/tests/modules/views_test_data/src/Plugin/views/row/RowTest.php

Provides a general test row plugin.

Rss in core/modules/aggregator/src/Plugin/views/row/Rss.php

Defines a row plugin which loads an aggregator item and renders as RSS.

Rss in core/modules/comment/src/Plugin/views/row/Rss.php

Plugin which formats the comments as RSS items.

Rss in core/modules/node/src/Plugin/views/row/Rss.php

Plugin which performs a node_view on the resulting object and formats it as an RSS item.

RssFields in core/modules/views/src/Plugin/views/row/RssFields.php

Renders an RSS item based on fields.

SearchRow in core/modules/search/src/Plugin/views/row/SearchRow.php

Row handler plugin for displaying search results.

UserRow in core/modules/user/src/Plugin/views/row/UserRow.php

A row plugin which renders a user.