I would think Profaci was wealthier than any of the other NY bosses with his company and his illegal rackets, no?
On paper? There's not a New York boss with a tenth of the money that John Profaci can "show." And I seriously believe that he doesn't have a single shady thing going on in his life.
And with the kind of money that he inherited from his father (call Joe Profaci greedy, but he had the foresight to launder his money before the Feds concentrated on such things), he'd have to be crazy to even cheat a nickel on his taxes. They're fucking loaded.
