2E had more than that, while I don't remember the full extent, I do remember new priestly classes in the FR gods series of sourcebooks. And I don't mean specialty priests either.
"Class bloat" I suppose isn't all that different from bloat from kits, prestige classes, archetypes, backgrounds, feat chains . . . . basically, codified character concepts regardless of what you call them or specifically how the rules work. Options are good, but there comes a tipping point where it gets silly. I'm not a Pathfinder player, but 38 classes plus more from 3rd parties seems to be approaching that tipping point.
In 5E, I'm hoping to see very few new classes. But I'm sure it won't be too long before we start seeing tons of "archetypes" (sub-classes) for the game.