Good catch Giacomo. I had this list below which I was just about to post when you posted yours. (but, I had forgotten about Frank DeCicco and Frank Cali)
------

Colombo: Aside from Joe Colombo himself who was shot and incapacitated, I’m hard pressed to think of any other “hierarchy” members who were killed. All five families had many capodecina who fell victim to violence through the decades, but as far as boss, underboss or consigliere, I can’t think of any for the Colombos, per se.

Genovese: Dating back to their earliest days, this Family has seen more than their fair share of internal violence; boss Giuseppe “Joe the Boss” Masseria, his underboss “The Clutch Hand” Morello, underboss Quarico “Willie Moore” Moretti, underboss/acting boss Anthony “Tony Bender” Strollo, underboss Thomas “Tommy Ryan” Eboli, consigliere Carmine “Eli the Baker” Zeccardi….I’m sure they had a few more too.

Lucchese: Their original leader, Gaetano Reina, was killed back in the early 30s. Then puppet-leader Joe Pinzolo, After that there were a few more in later years like acting boss Andimo “Tommy Noto” Pappadio, and Anthony “Buddy” Luongo.

Bonanno: Of course the infamous Salvatore “Don Turiddo” Maranzano. During the 1960s Banana War there was acting underboss Frank “Frankie T” Mari and acting consigliere Michele “Mikey Adams” Adamo who both disappeared, the infamous killing of boss Carmine “Lilo” Galante.

Gambino: bosses Salvatore “Toto” D’Aquila, Vincent Mangano, Albert “The Executioner” Anastasia, former boss/underboss Francesco “Don Cheech” Scalici, boss Paul “Big Paul” Castellano, and his newly installed underboss, Thomas Bilotti,

Thats all I can think of at the moment….Were there any more who I missed?