Is there a list somewhere of all the different factions/corporations? Thanks.

Been a while since I've looked but some of that might also be in the encyclopedia.

Partial list from memory, hopefully not spoiling anything:

You and your crew, of course
Stepsons
Kong
Mwari / MCA
Independents, which aren't anything more than targets and loot carriers for the most part
Navy
Local sector police
Maas and its security fleet - corporation
SOLAN and its security fleet - corporation

Edit: I think there is at least one more corporate faction but I'm drawing a blank on the name.