Hotdogs where I grew up and live usually come with mustard, Cole slaw or BBQ slaw, chili, and onions, or some variation of those toppings. Ketchup is optional but not unusual. My husband grew up in the same general area but subs mayo for the mustard.
Probably my favorite way is with spicy mustard, Sauer kraut, chili, and onions but chili and cheese is good too.
Peach
It does not make any difference “what” you put on it, it’s still a Hot Dog, not a sammich!