Don't forget that you can use alternative to dairy milks for oatmeal for a different take. I like unsweetened almond milk.
You can also make a quinoa porridge (just like rice porridge wih whatever milk you like) or a warm grain salad where its fluffy quinoa and bulgur and seeds and sliced fruit.
Ezekiel toast with cheese or sunbutter
My kids are not allergic to eggs, but just don't like them at all, so aside from cereal they eat:
vegan waffles or Eziekle toast with nut butter
Steel cut oat meal with blueberries and almond milk ( make a pot at the start of the week, then each morning microwave a bowl of it with frozen blueberries.
Smoothies made with a protein powder, greet yogurt, flax or chia seeds and fruit.
I think you can use flax seed as an egg replacement in recipes and it has a lot of nutritional value.
Cheese (on toast or just cut up with other stuff)
baked beans on toast (sounds weird, but a British "standard")
can you do some type of nut butter on toast (I'll put it on waffles as well instead of syrup)
turkey sausage or turkey bacon
non-pork cold cuts (my kid loves turkey for breakfast)
none of those is a stand alone breakfast, but you can mix and match with fruit or veggies and some carbs to make it a more complete meal
We have two really good eaters but they would eat (and have) 4 bowls of Cheerios/milk for breakfast. We need breakfast ideas that have protein and will keep them filled. One has a severe egg allergy, so the meals can't have eggs and unfortunately the allergy is severe enough that we can't crack eggs in the house and/or serve them to others at the table. (though we can make muffins and such using Ener-G egg replacer, but it doesn't replace the health benefits of eggs, it just mimics them in baking).
Also, we don't eat pork. Yogurt is hit or miss, partly because we give it as snacks and as part of their lunches. Kids are otherwise healthy, fine weight, wonderful. Just very hungry and whiny in the morning. I'd like to do better by them. Any ideas?