170 calories, 6g fiber, 6g protein, 0g sugar

This classic cereal ranks fourth on our ranking due to its impressive nutrition, widespread availability, complete lack of sugar, and super-short ingredient list, which is made up of just one item: whole-grain wheat. Add sliced banana, a drizzle of honey, or a sprinkle of cinnamon with stevia, and you have a filling and flavorful morning meal.