Lefty Ruggerio was in a different crew but moved to Sonny Black's crew after Carmine Galante was whacked. Not sure what crew he was in originally.
I believe Lefty was with Mike Sabella before Sonny Black
Napolitano was also in Sabella's crew, and picked up the captain spot when Sabella was knocked down. I think Napolitano offered Lefty a spot in another crew if there were hard feelings about Sabella, but made it clear he wanted him.