I lost most of my weight using Cheerios as my mail morning cereal. I’ll note that I was lucky in this regard, as many diabetics can’t handle the sugars in the combination of cereal and milk. I’ve found three more cereals I can use in the mornings, two oldies and one that’s new to me.
The new one is Fiber One, which has 25g of carbs per serving, 14g of that dietary fiber (and therefore, depending on the rule used, can be subtracted from the total carbs of the day, or half the fiber can be subtracted). The second is a version of Special K called Protein Plus, which has only 2g of sugars. The third is any of the kinds of Shredded Wheat, which can be used if you will cut the serving size in half. Sugars in the Shredded Wheat category are exceptionally low, but the standard serving has well over 40 grams of carbs. Half the serving falls into a tolerable range, with milk.