How did they form? What are their specific traits? Stereotypes (even untrue, if marked as such)?
If cultural differences coincide with geography, please mention in, too.
In the questions about weird things people from different continents do somebody pointed out, that Europeans have little knowledge of this, so please fix my ignorance.
The South(east) as a whole should not be lumped in with the Cajuns.
Louisiana and especially New Orleans are really their own thing. They just caucus with the South.
I was thinking specifically of an apple cobbler recipe I once did that had me dotting the whole pan with butter after the end, which I thought was a French technique. Turns out cobbler’s got English origins not French.
Ah, okay. Yeah, IIRC Scotland also contributed a lot of the really grease-heavy dishes to the no-spice parts of the South.
What about breading on fish and chicken? Where does that originate?
I don't know, and a quick search doesn't turn up anything. If they had moved over from Reddit I'd say it's a good question for AskHistorians.