Probably Kansas City because of the money that flowed into that city's family. They were the secondary recipients of the skim. Cleveland I feel lagged behind KC.

Tampa and New Orleans were relatively small. However, they had leaders who were very powerful, not in terms of family size, but political connections and connections to major leaders in NYC and Chicago. Yet, their power only extended so far due to connections with NYC and Chicago. I suppose the same is true for KC.

The Los Angeles Family was never very powerful. I also don't think their potential was quite big. The major rackets (movies, unions and adult entertainment) in California were dominated by Chicago and New York. The LA Family was more blue collar such as loansharking and bookmaking (of course this occurred in every city, but there were few white collar rackets).