What are some other good options for sustaining energy besides oatmeal?

Okay, So you Are looking for some good healthy, "energy giving" food… My first option that came right to my mind after reading this Is egg. It could be scrambled eggs, avocado toast with egg, boiled egg, sunny side up egg… With veggies or anything you want. Another one Is Plate of fruits. Personally, i have this kind of breakfast when i am in Hurry or i am not that hungry. Apple, Banana, strawberry, blueberry, grape…
Another option: a protein jogurt