San Francisco
Alioto brothers
Castro brothers
Cosenza brothers
Lanza brothers
LaRocca brothers
Lima brothers
Maita brothers

San Jose
Cerrito brothers
Ditri brothers
Sciortino brothers
Zoccoli brothers

Los Angeles
Adamo brothers
Bartolotta brothers
Battaglia brothers
DeSimone brothers
Dragna brothers
Giammona brothers
Marchese brothers
Matranga brothers
Mirable brothers
Milano brothers
Mineo brothers
Moceri brothers

Denver/Paublo/Trinidad
Carlino brothers
Chiappetta brothers
Colletti brothers
Dionisio brothers
Mortellaro brothers
Salardino brothers
Scaglia brothers
Smaldone brothers
Spinuzzi brothers

Dallas
Campisi brothers
Civello brothers
Genaro brothers
LaBarba brothers
Musso brothers
Piranio brothers

I am surprised no one mentioned these set of brothers.
Profaci brothers-Colombo
Magliocco brothers-Colombo
Castiglia brothers-Genovese