TBH, I think Flashy had it with the OP.
It’s a fried breakfast, so:
Fried bacon (smoked back for me, cooked to a crispy rind)
Fried sausages
Fried egg(s)
Fried tomato
Fried black pud
Fried bread
You’ll notice the recurring theme there, anything that isn’t fried can do one, as can your inferior fried bread substitutes and leftover mashed potato. If you must have potato then you can upgrade the breakfast to a full dinner with the addition of chips, deep fried.
Toast might be acceptable in Brighton & Hove but it’s fried bread all the way for us decent god fearing types.
If you are one of those deviants that think fungus is a food group then you can add mushroom, fried, of course.
Personally I find the yolk provides all the sauce I need, but red and brown are acceptable.