Yep, Sammy only killed two people, Joe Colucci and Adam Kaiser who was a innocent civilian..
Here's Pete's list
.Johnathan Quinn (34y) (July 20, 1977)
Motive: Testified before grand jury.
Method: Shot once in back of head with .32 caliber handgun.
Location: Apartment behind Gemini Lounge at 4021 Flatlands Ave (Flatlands, Brooklyn)
Participants: Roy DeMeo (36y), Henry Borelli (29y), Peter LaFroscia (28y), Chris Rosenberg (26y), Joseph Testa (22y), Anthony Senter (22y).
Note: Body dumped in Dongan Hills, Staten Island.

Daniel Conti (28y) (Found October 29, 1977)
Motive: Seen as weak link and potential cooperator re botched hijacking.
Method: Shot in neck and eye.
Location: Found in trunk of automobile at Rochester Ave and President St in Lincoln Terrace Park, Brooklyn
Participants: Roy DeMeo (37y), Peter LaFroscia (28y), others.
Note: Body discovered by car thieves in process of stripping vehicle.

John Costello (20y) (Found November 14, 1977)
Motive: Seen as weak link and potential cooperator re botched hijacking.
Method: Shot multiple times in head.
Location: Found in trunk of automobile at 1045 Atlantic Ave in Bedford-Stuyvesant, Brooklyn.
Participants: Roy DeMeo (37y), Peter LaFroscia (28y), others.

Michael Mandelino (Lucchese Associate; 37y) (March 19, 1978)
Motive: Suspected of setting up Peter LaFroscia for robbery.
Method: Shot multiple times in head.
Location: Found in trunk of automobile at Hinsdale Ave and DeWitt Ave (East New York, Brooklyn).
Note: Victims, described by LE as low level associates of Lucchese Family's Vario crew, wrapped in plastic and bound with wire and/or venetian cords.

Nino Martini/Martino (Lucchese Associate; 38y) (March 19, 1978)
Motive: Present with Mandelino.
Method: Shot multiple times in head.
Location: Found in trunk of automobile at Hinsdale Ave and DeWitt Ave (East New York, Brooklyn).
Note: Victims, described by LE as low level associates of Lucchese Family's Vario crew, wrapped in plastic and bound with wire and/or venetian cords.

Anthony Romano (64y) (July 4, 1982)
Motive: Suspected involvement in 1978 robbery of Peter LaFroscia.
Method: Shot multiple times in head with .38 caliber handgun.
Location: Found in vacant lot at Blake Ave and Van Sinderan Ave (East New York, Brooklyn)
Participants: Roy DeMeo (41y), others. Believed authorized by Gambino leadership.
Note: Victims bound with cord and wrapped in plastic bags.

John Romano (36y) (July 4, 1982)
Motive: Suspected involvement in 1978 robbery of Peter LaFroscia.
Method: Shot multiple times in head with .38 caliber handgun.
Location: Found in vacant lot at Blake Ave and Van Sinderan Ave (East New York, Brooklyn)
Participants: Roy DeMeo (41y), others. Believed authorized by Gambino leadership.
Note: Victims bound with cord and wrapped in plastic bags.