Overt Christianity, I guess. They tend to have contemporary Christian music playing softly as background music, and have occasional signage with a scripture on it, but it’s not like you are going to a church service. If you weren’t looking for it, you might not even notice it.

However in my experience literally everything else you listed is completely inaccurate. People in the south eat at Chick-fil-A because they like Chick-fil-A food. I see all sorts of people eating there. It’s remarkably diverse.