We already have paladins, rangers, monks, warlock depending on the archetype, various fighter archetypes and multi-classing. I'm not sure what you would want that wouldn't just be straight up power creep.
That's seems like an imagination problem if you can't find the difference between a herculean strongman, a barbaric berserker, and a master swordsman.
I mean it's just benchmarks. There are more that one way to reach them. These are game design aspects that were figured out decades ago now. You can add a class without it being broken. It just requires discipline.