The various species of people are made to particular aesthetics, but they've still got more than just one thing going on; the other gods cover other aspects of their lifestyles, or other values or interests that they have aside from the main one, which is usually covered by their creator. For dwarves, for example - their creator, Moradin, is the god of smithing and engineering, their primary concern; his wife Mya is the goddess of clan and family, which is nearly as important to them, and they also have gods of magic item crafting, death, oaths and family obligations, forges specifically, and revelry, all of which are important aspects of dwarven life.
This probably deserves its own post, really. He'll write one tomorrow.