Fighter and Swordsman are the same, in my opinion. Mage, Archer, Swordsman (or Knight), and Thief? I know it's only four, but those are four basic ones for MMOs. Just with different names.

Mage would be healer.
Swordsman/Knight would be close range fighter and tank
Archer is long range fighter
Thief is close range fighter, but not tank

Races, I'm thinking Elves (may or may not be separated into light and dark elves), Orcs, Vampires, Dwarf, Goblin, Troll, and Human?