Modules

Use responsive image styles for inline images.

Create groups with private content.

There are lots of additional modules with extra features.

Add a field to content entities to select the group to add them to.

Convert year/quarter taxonomies to timestamp in views.

Configure block titles as menu links.

Can be used for blocks in layout builder.

Drupal's main search module.

Use facets with core views.

ECA/VBO actions for group.

The VBO action is very clunky to use in practice. You need to know the group ID to assign it to.

Bulk operations for group users/roles/owner.

Select groups to modify, and get this form to make changes.

VBO integration for ECA.