Interestingly enough, I found this list of rats/informants on the internet. Didn't get a chance to cross check yet.

Friday, March 9, 2012
List of NY Mafia Rats/Snitches/Informants/Turncoats
Bonanno Crime Family - 14 Members who have Flipped

Genoroso “Jimmy the General” Barbieri - Soldier/Former Acting Capo
Joseph "Jersey Joe/Joe the Rat" Bonanno - Soldier/Acting Capo
Paul Cantarella - Soldier
Richard "Shellackhead" Cantarella - Capo/Acting Underboss
Dominick Cicale - Soldier/Acting Capo
Frank Coppa - Capo
Joseph "Joey Mook" D'Amico - Soldier
Frank "Curly" Lino - Capo
Michael “Sonny” Maggio - Soldier
Joseph "Big Joey/The Ear" Massino - Boss
Nicholas “P.J.” Pisciotti - Soldier/Acting Capo
James "Jimmy Tag/Big Lou" Tartaglione - Capo
Salvatore "The Chief/Good Looking Sal" Vitale - Underboss
Peter Rosa - Soldier

Gambino Crime Family - 12 Members who have Flipped

Alfonse “Jim Carra” Attardi- Soldier (Dead)
Dominick "Fat Dom" Borghese- Soldier
Primo Cassarino- Soldier
Joseph "Little Joe" D'Angelo- Soldier
Craig DePalma- Soldier (Dead)
Michael "Mickey Scars" DiLeonardo- Capo
Frank "Frankie Fapp" Fappiano- Soldier
Salvatore "Sammy the Bull" Gravano- Underboss
Robert Mormando- Soldier
Alfredo “Freddie The Sidge” Santantonio- Soldier (Killed)
Nicholas “Nicky Skins” Stefanelli - Soldier (Suicide)
Name Not Revealed - Soldier

Colombo Crime Family - 17 Members who have Flipped

Paul “Paulie Guns” Bevacqua- Acting Capo
Reynold "Ren" Maragni - Capo
Rocco Cagno- Soldier
Dino “Big Dino” Calabro - Capo
Joseph "Joe Camp" Campanella- Capo
Joseph “Joey Caves” Compatiello- Soldier
Salvatore "Big Sal" Miciotta- Soldier/Acting Capo
John Pate- Capo
Alan Quatrache- Soldier
Michael "Mikey/Yuppie Don" Franzese - Soldier/Acting Capo (Left the life)
Anthony "Big Anthony" Russo- Acting Capo
Sebastiano “Sebby” Saracino- Soldier
Greg “The Grim Reaper” Scarpa Sr- Capo (Dead)
Gregory Scarpa Jr.- Capo
Carmine Sessa- Consigliere
Michael “Mikey” Souza- Soldier
Frank “Frankie Blue Eyes” Sparaco- Soldier

Genovese Crime Family - 8 Members who have Flipped

Anthony “Bingy” Arilotta- Soldier
George Barone- Soldier
John “Futto” Biello- Capo (Killed)
Vincent "Fish" Cafaro- Soldier
Felix Tranghese- Capo
Joseph "Joe Cago" Valachi- Soldier (Dead)
Louis Moscatiello- Soldier/Acting Capo (Dead)
Renaldi “Ray” Ruggiero - Capo

Lucchese Crime Family - 15 Members who have Flipped

Anthony "Tumac" Accetturo- Capo
Anthony "Gaspipe" Casso- Consigliere/Underboss/Acting Boss
Peter "Fat Pete" Chiodo- Capo
Alphonse "Little Al" D'Arco- Capo /Acting Boss
Joseph D'Arco- Soldier
Joseph "Little Joe/Joe D" Defede- Soldier/Acting Boss
Eugenio "Gene" Giannini- Soldier (Killed)
Frank Gioia Sr- Soldier
Frank Gioia Jr- Soldier
Steven LaPella- Soldier
Frank Lagano- Soldier (Killed)
Dominick “The Gap” Petrilli- Capo/Soldier (Killed)
Thomas “Tommy” Ricciardi- Soldier
Vincent "Vinny Baldy" Salanardi- Soldier
Frank "Goo Goo" Suppa- Soldier