At the moment is very hard to check if a user is member of the autoreviewer group. You have to check articles edited by this user: reviewed? by whom? And if last version was also reviewed before.
The group membership of e.g. autoreviewer and autoconfirmed are not visible in the lists (e.g. Special:ListUsers) nor logged at the user rights log.
So it would be much easier if the group memberships of these "auto groups" would be also visible in Special:UserRights. The user itself can see this info at Special:Preferences or api.php?meta=siteinfo&siprop=usergroups.