I don't play evil characters or put up with evil companions, so for me it was:
BG1 (EE): Imoen, Branwyn, Minsc, Dynaheir, Kivan. Sometimes Glint, sometimes Neera, sometimes Corwin.
BG2 (EE): Imoen (d/c to Wizard), Minsc, Anomen (d/c to Cleric), Neera, plus one of Keldorn, Mazzy, or Sarevok (in...