Cream of rice is found next to the cream of wheat. You can add chopped fruits and other stuff. I have made muffins from cream of rice for my boyfriend, before he passed. He loved them and gobbled them up
They taste like cranberry muffins and were good enough for anybody to eat - nobody would be able to tell they're rice based. I mix applesauce, 4 ripe bananas, 1 packet cream of rice, and add some cinnamon, dried cranberries, and perhaps a splash of orange juice and vanilla extract and bake them in a muffin pan.
You can also make a myriad of things with potatoes, which is something that is breakfast, lunch or dinner friendly. Sweet potatoes pack more vitamins than plain potatoes. A combination of protein and veggies are a great breakfast combo. You can find organic sausages made from chicken, turkey, pork, etc, with less yucky stuff than regular sausage. Don't forget that 'grits' are made from corn. That's an acquired taste, but you can do a lot with grits. Well made grits with some flavoring is good. The cousin of grits is Polenta - you can find readymade Polenta in the grocery store in tubes. You may need to think a little out of the box with breakfast and not think in terms of just sweet typical American foods.
True corn flakes, amarynth flakes, and true buckwheat can be used (buckwheat is gluten free). Some people have no problems with oats, but that's under hot debate. People on gluten free diets can have quinoa, amarynth, buckwheat, teff (Ethiopian grain), tapioca, and anything from corn, potatoes, and rice. You can buy rice flour and sometimes tapioca flour at any Asian grocery store. You can tweak recipes and make breads or thicken sauces that way.
Just check the back for wheat, barley or rye and you should be okay.