For a more serious contribution, there are no mass-accepted "pop-culture" names for any single class.
An arcanist (the proper technical term for all arcane spellcasters) can be called anything, from mage to witch.
A cleric may be called a priest, a chosen one, a miracle worker, a lunatic (gods living on the moon...), a godslave...
A fighter may be called a warrior, soldier, a man-at-arm, a brawler, a brute...
A rogue may be called a sneak, a scoundrel, a thief, a spy...
Also, there are several classes, some of them staying in the boundaries. A mageblade (from AU) could be considered an arcanist or a warrior.
Thanks to a few houserules, though, both wizards and epigones (sorcerer replacement) slowly turns themselves into something else, the power of arcane magic rewriting them into something new. So, they could be called the freaks. Only problem, the really freaky ones are the most powerful...
The only class name that is accepted and recognized widely is "paladin." (Although clerics of a LG deity may be considered paladins too.)