Yep, no way Lubrano is UB. Pizzaboy knows his shit, certainly when it comes to the Bronx and I'm pretty sure he said Lubrano only got his button out of respect to one of his family members or something like that, some sort of favor, I can't remember.

As for who's the underboss It's pure guesswork on my part but I'd have to go with Dom Truscello, Crea is tight with him, or maybe Neil Migliore.