What if a group of top leaders agree that certain information can be given because it will not hurt anyone, or if a dying guy says "Give them my name for a few old crimes" I don't consider that ratting, Vito Genovese had guy who he would tell to talk to the FBI, but the guy would give nothing significant. The guy would report back to Genovese and tell hi what they seemed interested in. Genovese would use that info to see who might be pointing them at it. I think in the end, they (The Mafia) decide who is a rat, not us.