Dwarf

Dwarves that live underground live isolated under mountains and in the Gloomdeep and don’t come into contact with surface races. The dwarven communities above ground are descendants of exiled dwarves that once lived underground. Thus the  original dwarves  are the ones that are called Duergar who live underground, and the other dwarven races that do not have pale white skin and no sunlight sensitivity are the ones that evolved to live above ground generations after being exiled. The duergar communities exile members of their own race as the utmost punishment, worse than death. They also have special teams devised to escort an exiled member of their society into the border to the outside so they make sure that the exiled remain outside. A byproduct of all this is the Half-Dwarves, made by the union of a dwarf and a race in the surface, mostly humans. Dwarves worship any god they feel like with no deity holding any special treatment among communities. As for the Duergar, the only deity they worship is Dergenath, the Duergar god of Stone, Clanship and Craft who is viewed as the only true dwarven god.