I don't know the flavor, but Is this confirmed? 3 factions would be quite a handful tbh. Plus Charles was also pretty sure we have a cult here. Are one of the above factions a cult?
Not a cult but maybe potential to convert Walter as he had his fingers in a bunch of pies throughout the series.
I'm confident it's 3 smaller mafia teams.
Gus has 3 with Gus, Mike, and one more (Probably Gale)
Hector's (cartel) team has 3 with Hector, Tuco, and the Twins
Jack's group has 2 or 3 with Jack and Todd and potentially lydia.
It is more or less confirmed as it was the cartel that killed Ratchet + one from Jack and Gus' group flipped.
The 3 groups are basically the antagonists throughout the series