drupal/core/modules/node/node.local_actions.yml

node.type_add:
  route_name: node.type_add
  title: 'Add content type'
  appears_on:
    - node.overview_types
node.add_page:
  route_name: node.add_page
  title: 'Add content'
  appears_on:
    - node.content_overview