There is a certain section of motorcyclists who have organized themselves into outlaw biker clubs and here are their ranks.
Two related 100 word subs for double the fun
In addition to the Thieves' Guilds, there is a hierarchy that all thieves are part of. Rank is based on skill, and can be raised or lowered at any time. The Queen of Thieves, the greatest living thief in the world, is the ruler. Guildmasters answer only to her, and she answers to no one at all.