Don't actually know where you'd slot these folks--realistically, they mix so many elements so well, Alternate's a better choice. But then, true to the name, they're all-acoustic. Stringtown Listen to them any Sunday outdoors at a local restaurant. Their Site: http://stringtownmusic.com/
https://www.youtube.com/watch?v=DcCE-6R7zyI << well, OK, they let an electronic piano sneak in << I think this is the type of rendition JJ Cale would like, though he happily cashed the checks of the Southern rock version
Sorry but that's all I could find. Come down to SW Florida and make an afternoon of it...or buy their CDs by mail (not available elsewhere).