1st question.
2 hits in the 1940s while he was in Sebastian Aloi crew.
1 hit as a made member before becoming a capo in the mid 1950s.
2 hits ordered as a capo in the late 1950s.
Joe Vitelli, this hit is one of the the reasons that Joe Colombo made him his underboss. Franzese passed the order to one of his soldiers.
Dominick Scialo by members of Franzese crew.
John Matera by members of Franzese crew.
Lawrence Carrozza by members of Franzese crew.
There is more likely more that Sonny ordered as a capo and underboss, and even before being made and as a soldier.
That list, I dont believe cause it makes no sense why Franzese would be involved in Genovese business hits. The Jimmy Angelina hit, no way.

2nd question.
There are old members still around. I am sure there are some that were made when Bonanno, Gambino, Genovese, Lucchese, and Profaci were bosses, but the number has been dropping by the decade.