7.
Meyer Lansky
With a Forbes count in 400 richest people in the U.S and a net worth of $600 million our number 7 successful gangster is Meyer Lansky.
This particular character emigrated to New York and started his crime days by partnering with infamous Bugsy Siegel, with whom he organized a gang of assassins, run liquor smuggling business and other illegal ventures.
By the time he was 30, he was in ties with the biggest names in the American and Italian mafia, creating for them a syndicate and making use of his offshore accounts to launder their money.
With more ties and more power Lansky went in the gambling area and started some operations in Cuba, Florida and Las Vegas and then in the Bahamas.
He was the man behind everything, from money laundry, to narcotics, prostitution, narcotics everything he could get his hands on.