What accent is Daniel Craig trying to do in Knives Out?

There is not just a single USA “southern accent” . Which one is Craig trying to do?

IMDB Trailer I’m looking forward to this one.

It sounds like he’s doing an imitation of Kevin Spacey playing Frank Underwood, but with a name like Benoit Blanc, you might expect Louisiana.

I felt he did an okay job with a generic southern accent in Logan Lucky.