I'd guess Gambino was the wealthiest, considering the size, strength and spread of his family at its peak, and all the years he stayed at the helm. But the Feds actually documented that Capone brought in $115 million in 1929 (probably worth 10-15x that amount today).
I'm guessing you mean his entire gang.
I remember reading that Capone himself didn't have a set cut of his organization's profits for income but just took what he needed.
