Going back to Qui-Gon, i would say he was a Scoundral/Consular/Master if you were to include those classes from the first KOTOR. I say Scoundral 'cause of the way he manipulated(cheated) the dice cube at Watto's. Consular because he was a diplomat and Master because he seemed to be well rounded in the use of the force/feats without being too heavily built in either of them.