I would think Stanfa would want as many level headed guys ,and earners also .
Now he was around New York for some time and he was in Philly for some time.
It would make sense that he would take the under bosses son and a skippers sons in.

Plus that would plug him into the guys that wanted the life from the hood.

As far as the indictments I would think that whom ever left standing under him would get the family the way they like things to go.
So Skinny and Mike I am sure would have been there if not in the indictment.