As a white man, I love collard greens and corn bread. I can understand how it became associated with (poor) black communities, but damn is it good. It shouldn’t be an insult like some people make it.
I live in the South. Nobody here ever heard of “Soul Food”.
Everybody eats that because it’s awesome.
Go to a meat and three after Church on Sunday. You will see it full of happy old White People eating exactly what you described.
I’ve got a whole song arranged for Appalachian/mountain dulcimer about how great collard greens are. Iirc it’s by the prolific author “traditional”.
Edit: oops, it’s about turnip greens. Totally different.