t The Alleycats
The Amsterdam All-Stars
x The Baseball Furies
The Big Trains
t The Black Hands
t The Blackjacks
x The Boppers
x The Boyle Avenue Runners
The Charlemagnes
The Colt 45's
The Dealers
The Delaney Rovers
The Dingos
The E Street Shufflers
The Easy Aces
The Eighth Avenue Apaches
x The Electric Eliminators
The Fastballs
The Fifth Street Bombers
The Filmores
t The Firetasters
The Five Points
t The Gerrards
x The Gladiators
The Go Hards
x The Gramercy Riffs
x The Gun Hill Dancers
x The High Hats
The High Rollers
The Homeboys
The Hoplites
t The Howitzers
The Huks
x The Hurricanes
The Imps
The Jesters
x The Jones Street Boys
The Judas Bunch
t The Jupiters
t The Knockdowns
The Knuckles
x The Lizzies
The Locos
The Magicians
The Meatpackers
x The Moonrunners
The Napoleons
The Nickel Steaks
The Nightriders
The Ninth Avenue Razors
x The Orphans
x The Panzers
The Phillies
t The Plainsmen
x The Punks
The Queen's Bridge Mutilators
The Real Boys
The Red Hook Shooters
The Roadmasters
x The Rogues
The Romans
The Runaways
x The Saracens
The Saratogas
x The Satans Mothers
x The Savage Huns
The Shanghai Sultans
The Southern Cross
The Speedwagons
The Stevedores
The Stilletos
The Stonebreakers
The Terriers
The Turks
x The Turnbull AC's
x The Van Cortlandt Rangers
x The Warriors
The Whispers
The Xenophones
The Xylophones
The Youngbloods
The Yo-Yo's
The Zodiacs
t The Zulus
The list above is from
http://www.warriorsmovie.co.uk/gangs/ - to which I added Satans Mothers (with a "The" prefixed, for uniformity)
x = gangs ID'd on that page; t = gangs ID'd on this thread
This makes 84 gangs total, as listed in the script
Assuming I made no errors, we have now identified 32 of those 84, meaning we are at just over 38% completion!