There are a lot of low-fat cereals like Puffins, heart to heart, Indigo morning, honey bunches of oats, kix, cheerios, Nature's path oaty bites, and power O's.
Müsli-style cereals have sugar in their fruit, but because they fill your stomach much better, you are less likely to snack on sugary foods later in the day. Theoretically.
I meant low sugar!