One of the reasons I think Into the Badlands would work is because in its way, it's a very structured universe.
Assuming the game only takes place within the Badlands and outside influences are NPC only, there are lots of options to play:
Clippers - soldier/assassins/enforcers. Probably a lot people will go for this. Each individual Barony has its particular look and theme. Each Baron also has a Regent, their head clipper. Some Barons have all-male clipper forces, some all-female, some mixed.
Barons - and their families, assuming Barons are not NPC only. Basically the heads of household. FYI, Barons can be female.
Craftsmen - Leatherworkers, blacksmiths, tattooists, even doctors and healers. Technically most of these are cogs, or retired clippers, but they have somewhat more status than cogs who work the fields and industries and households.
Cogs - the regular joes. Often fieldhands, house servants, etc. In some baronies, cogs can actually work their way into the upper "classes" - prove themselves worthy of becoming clippers, draw the eye of a baron or a member of a baron's family, prove they are worthy of learning a more advanced skill.
Edited to add: I suppose I should add Dolls to the mix, but that would depend entirely on how staff would field about prostitute characters.
And that's just within the Badlands. It opens up even further once you're past the walls.