There are so many that come to mind that this is a tough question you posed here. But to name a few off the top of my head who I think would be interesting to chat with over a cup of coffee are, without a doubt, Salvatore Maranzano, Lucky Luciano, Frank Costello Carlo Gambino and Joe Profaci.
Profaci and Costello are good choices. But my number 1 would be John Gambino, which should come as no surprise...lol.
