Every time I try to find a complete list of Rogue Trader classes (perhaps with an image and description), I always come back to the same thread:

https://community.fantasyflightgames.com/topic/63443-rogue-trader-character-classes/

However, google does not help me to figure out more details about these classes, and I know for a fact that there are Tau, Dark Eldar, etc. that are out there and available as well. A friend of mine is getting back into the game after an extremely brief time as a Navigator, and I want him to be able to have a quick, concise way of being able to choose what he would from a complete list of classes.

(Suffice it to say, things didn't go well with our GM and he stopped playing only 3-4 sessions in, but he's about to give it another try with a new character.)

Can any of you guys direct me to such a list, of any kind?

Check out this Google Doc . That list doesn't have any descriptions to it, but so far as I know it's complete.

Edit: Credit for this goes to Asehujiko.