Some of the guys from the early days would be interesting but I think of someone like Tommy gambino. Not sure he’s the best example but grew up with his dad knowing the life inside out, will know stories from the pre 1930s era and then lived through multiple generations of the mob since then. Someone with insight from so many people over a long period of time would be interesting. Would also be good to speak to someone in upper echelons of the Genovese family to find out how they’ve really been organizing things all these years!