Easy tiger. This is not any new news. Anyone that knows anything about the Montreal Rizzuto family knows it's been comprised of Sicilian and Calabrese factions.
BUT, even though the Sicilian and Calabrian factions were considered one family under the Bonanno flag, there was always competition between the Sicilians and Calabrians. The two Italian groups looked upon each other for centuries as the others inferior cousin. Competition between the Sicilian, Luigi Greco, and the Calabrese, Vic Cotroni, is a great example.

Also, there's plenty more sicilians than the ones you named, Caruana's and Cun trera's for starters.