I have different things. I quite like plain porridge made to water but I add fair amount of salt to make it tasty which is bad ofc.
I also like to have cereal sometimes whatever the partner has, atm its weetos but that changes all the time to what he wants.
I also like to have eggs for breakfast, just any eggs as they are all good.
Then when I feel like being bad I have lots of toast in one go. I love bread but try not to buy it often as its not good for me.
And finally when I go visit family its usually open sandwiches with ryebread topped with cucumber, salad, ham/cheese/liver sausage etc and maybe some rice pies too if I have managed to talk my parents into buying some.