My favorites are cocktail sauce and creole mustard. Cocktail sauce has ketchup in it and creole mustard is a type of mustard but it’s pretty different from typical yellow mustard.
Both also have horseradish and I also love “horseradish sauce” (sometimes aka “prime rib sauce”) which is basically mayo, sour cream, and horseradish. So, I might just really like horseradish.