There are mainstream brands like General Mills, Kellogs, Post Foods, Quaker Oats, and Kashi. However, there are also organic brands like Arrowhead Mills, Barbara's Bakery, and Cascadian Farm.
Kellogg's is probably the most popular in the United States. Other common brands include General Mills, Post, and Quaker. In most large grocery stores, you will see a store brand. This, however, is usually produced by one of the big companies mentioned previously with a store brand label on it.
