So far, for the Other category, we have the suggestion of "Mafia made men or soon to be made Men. Fighting the Yakuza"
I can say that a gang group did come up, and we kind of tossed that idea into the group of the Slums group that is protecting their territory. We went with Slums, because it promoted a sense of "Home," a place for the people to want to come back to, care what happens to it, and be willing to help the locals.
A Mafia group can easily fit into that one as well, but I will keep the idea open for the OTHER category for now, and see if it gains traction.