Warrior, Thief, Wizard, Priest.
They are the four classic archetypes of tabletop roleplaying, so iconic that they have been rendered into one form or another in nearly every class-based RPG since the dawn of gaming. When MMOs entered the scene, they took slightly different names: Tank, Melee DPS, Ranged DPS, and Healer. The MMO has also added the concept of "crowd control," which has in turn made its way back into tabletop gaming. But essentially we can still find places for most roleplaying characters that correlate to those four original archetypes. Certainly, systems and players have added layers of complexity on top of these paradigms, but we fall back into these patterns for a reason. They are powerful in their ability to inspire us and yet clearly understandable in their depictions of role and identity.