None of those cereals existed when I was a kid in the 50’s. We ate Rice Krispies, shredded wheat, and sometimes Sugar Pops.
Puffed Rice, Puffed Wheat, Wheaties, Sugar Smacks,Chex [rice, wheat and corn], Corn Flakes, Frosted Flakes and hot cereals like oatmeal, cream of wheat, cream of rice and Maypo.
I am sure there were others. But in addition to your list we had a variety of options in the 50’s.