Start up those threads you think are missing and see what happens, GUEST, whoever-you-are. Preferably using a GUEST or member name.

I've certainly seen a good few discussions about various forms of traditional American music, over the years, even including some about the various kinds of imported music you referred to, such as Klezmer and polkas, which do tend to be more neglected than say old timey. It'd be great to see more.

I can't reeally see why the presence of other threads about related forms of music should get in the way of that.

Perhaps a few more specific prefixes would help.

I agree that it is irritating when people seem to think that folk music is just about "Anglo-Celtic" music and modern songsters. And my impression is that there are a lot of people already out there in Mudcat Land who would agree about that.