That's hard to say since there aren't to many realistic network of wealthy mobsters. In terms of comparison of kingpins, it vary too much. Take example Frank Matthews you mention, it's estimated his DTO made $300 millions in total before he fled. Ricky " Freeway" Ross whose total was $600 million. The Flenory Brothers ( B.M.F) was roughly around $500 million. Generally speaking a kingpin can make the same amount of a LCN boss, more or less.
you forgot to mention craig petties.
Carmine Galante must have been in the same ball park as big meech and Freeway cause they were basically the same thing,they had a direct source of supply and distributed in numerous states aswell as controlling the supply in the cities they were based in , in this case being atlanta, LA, new york.
