A Steward badge can be received for every review queue. For StackOverflow that amounts to 8 (eight) badges.
Q&A for professional and enthusiast programmers
select top 100 b.userid, u.displayname, count(*) as gold, max(b.date) as dd from badges b inner join users u on u.id = b.userid where name in ('Steward') group by b.userid, u.displayname order by gold desc, dd