1.) I believe Ruggiero and Rastelli were both Neapolitan. I'm not 100% on that.

2.) Although the Family was primarily Castellamarese oriented, there was a Calabrian regime led by ANGELO CARUSO since 1932. The Family started to open the ranks to Neapolitan and more Calabrian members in the 1950s.
Bonnano did find mafioso from his hometown to be more trustworthy.