Dreyers had once – once – Chilly Chili, vanilla with a mole ribbon and spicy Spanish peanuts. Alas, after a couple weeks when, I assume, the batch ran out it was never repeated.
Worst was Yankee Doodle from a company I don’t remember. It was Neapolitan with blueberry replacing the chocolate so, red white and blue. It didn’t taste bad but when it started melting the three colors would blend into a highly unappetizing magenta.