Some Camorra members were worth hundreds of millions or even billions because of the cocaine trade among other things. Carmine Alfieri was worth an estimated $1.2 billion. Michele Zaza was worth an estimated $700 million. And the Nuvolettas has legal assets at around $280 million. I’m sure there are more. Bardellino was worth just as much I would assume.
Salvatore Zazo might aswell be in that league. According to DEA he was handling about 500 million euro worth of drugs each year... LE seized assets from his clan for about 400 million dollars, hotels and shit.