I dont think every different group in chinatown is involved in the extortion racket so its not gonna get divided up like that, it only probably one or two of the groups that get the money off of it, most likely the tongs and street gang enforcers. Also tongs and triads have been known to work together on a whole bunch of stuff such as drug trafficking and arms dealing. Snake heads specialise in people smuggling and sex trafficking. The street gangs are often used as muscle but they do their own thing as well such as robberies, drug dealing and arson.