Ripley asks where the codes are, but they only know of one location that holds one of three parts of the code, however Indiana Jones is keeping his cards close to his chest when she asks specifics.
Yoda also knows wikus has a code installed in his head and has hired a bounty hunter ( agent Kruger) to try and find him
Am I wrong in suggesting "they" are Yoda, Indy, Marty, Scott and Commando and perhaps Kruger though I doubt it as he is a a hire to kill and they know one part, wikus the other?
No you have it about right. there's 3 teams barring betrayals. the falcon team is what you said and the wikus lads have one and the mafia are 3 people team too.
I don't think we have a code yet though.