I dig that you guys are digging into this stuff. Not because I think it's all good music. (Not at all; there's plenty of junk.) I just like how you're poking around in all the rooms in the house of jazz -- even the places that are normally ignored.
In my experience, the most interesting revivalists are the pianists. Art Hodes, Don Ewell, Dick Wellstood, Ralph Sutton, Dick Hyman, Dave McKenna.
As for Dixieland: I've never really gone there. I think I have two Dukes of Dixieland records (one of them features Pops) and that's it. ... It was an odd phenomenon, wasn't it? I get the sense that Dixieland took root in colleges in sorta the same way that the Folk Revival did, that being able to play/participate in the music was part of the appeal. ... But there is also a sinister side to it too: the overt cultural appropriation, the rebel flag waving aspects of it that are so ugly and vile. But that's a part of the story too. And, of course, it didn't just happen with Dixieland.