Fictional User Group Rights

Auto-confirmed Users - Customised User Group A
Everything that a regular auto-confirmed user can do plus People in this user group can do pretty much everything a sysop can do, except they can't:
 * Kick and ban other users from chat
 * Kick and ban chat moderators from chat
 * Use rollback
 * Block and unblock users
 * Delete and undelete pages
 * Move pages without leaving a redirect
 * Edit administrative protection pages
 * Re-name images
 * Grant and revoke chat moderator privileges
 * Edit wiki theme design
 * Edit wiki settings
 * Edit mediawiki
 * Protect and unprotect pages

Auto-confirmed Users - Customised User Group B
Everything that a regular auto-confirmed user can do plus People in this user group can do pretty much everything a sysop can do, except they can't:
 * Grant and revoke chat moderator privileges
 * Kick and ban other users from chat
 * Use rollback
 * Edit wiki theme design
 * Move pages without leaving a redirect
 * Edit administrative protection pages
 * Re-name images
 * Edit wiki settings
 * Edit mediawiki
 * Protect and unprotect pages
 * Kick and ban chat moderators from chat
 * Block and unblock users
 * Delete and undelete pages

Auto-confirmed Users - Customised User Group C
Everything that a regular auto-confirmed user can do plus People in this user group can do pretty much everything a sysop can do, except they can't:
 * Use rollback
 * Move pages without leaving a redirect
 * Edit administrative protection pages
 * Re-name images
 * Grant and revoke chat moderator privileges
 * Kick and ban other users from chat
 * Kick and ban chat moderators from chat
 * Block and unblock users
 * Delete and undelete pages
 * Edit wiki theme design
 * Edit wiki settings
 * Edit mediawiki
 * Protect and unprotect pages