The two main types of donuts are yeast donuts and cake donuts. Yeast doughnuts use yeast as the leavening agent and are light and chewy. Cake doughnuts, however, are made with a cake batter that requires baking powder and/or baking soda for leavening. A cake donut is moist, a bit crumbly, and has a cake-like or muffin-like texture.