Can anyone confirm this? Are the Gambinos really saturated with new recruits from Sicily?

What about the Bonnanos and Colombos?

I ask because Mr. Persona non grata ( Giacomo Vacari) said something like this before, even went so far as to name the specific places in Sicily. I think he linked the Bonnanos to Trapani.

So how true is all this? Not so much the wacking family members, rather the recruitment drive.... Is this a real thing?