Extension:FilterListUsers

FilterListUsers is a MediaWiki extension that hides users who have made  (5 by default) or less edits from Special:ListUsers unless the current user has the   user right, in which case they can view the full, "uncensored" user list. Users who belong to one (or more) of the user groups listed in the  configuration variable are also not filtered out; by default these groups are: sysop, bureaucrat, steward, staff, globalbot

By default administrators have the  user right, so they can view the full user list.

This extension is based on an old core hack by Wikia.