I've never heard of the one that's supposed to be the most popular in my state, and I live in one of the larger cities. The logo looks totally unfamiliar.

It's apparently fake: https://www.cincinnati.com/story/entertainment/dining/2020/06/05/americas-favorite-restaurant-chains-mollys-ohio-skyline-chili-west-virginia/3158375001/

I've been to Whataburger when I was traveling through the South. It was decent. In-And-Out is overrated.

Interesting fact: There aren't any Carl's Jr. on the East Coast (furthest East is 1 in Ohio) and there are no Hardee's in Nevada. They're the same chain, Hardee's is the Eastern brand, Carl's Jr is the Western brand. There aren't any Skyline in WV either.