If you haven't been paying attention to the recent updates, then it's likely that you haven't notice that the types of mobsters have all changed. Instead of the old types of mobsters, Bulletproof, Insomniac, and Tycoon, we now have Nightowl, Soldato and Mogul respectively. Why the new change? Personally, I think the Godfather is bored on Friday nights but I will let you make up your own mind.
There is also a new type of mobster to chose from. A "hybrid mobster" if you will. This hybrid mobster, "Renegade", is a jack of all trades and generates a small bonus for each category - health, energy and stamina.