5: Fighting Man, Cleric, Magic-User, Dwarf, Elf - both of the demi-humans using race-as-class. Some folks feel that the old races add color to a game, but think the Thief/Rogue as "skill guy" encourages the view that other adventurers are unskilled.
7: As 5, plus Thief and Halfling - again, race-as-class is in play.