I just don't see a dwarf druid as dwarfy. Dwarves are all about industry. Maybe there could be a tribe of pagan dwarves who worship Grumbar, or some god of Mountains and gems, but even they would be miners probably. A barbarian likewise isn't going to work for a dwarf, because dwarves have an inherent bent towards being lawful and their rage is always directed by what they perceive to be just and right. Frankly the only race that I could see being a barbarian is human OR the beastraces.
If we get a dwarf I would fully expect him to be a fighter, paladin, meelee bard, monk or a cleric. A rogue could also work, but I doubt we get one more of those.
Arcane magic is just something I don't see dwarves delving into for it's own sake, however for some reason I have this idea of a dwarven rune-priest in my head who is like a cleric/wizard multiclass, but I don't think you can make that work in BG3.
