Who counts as 'Evangelical'? Colin Woodard's 'Midlands' nation is generally plurality-Methodist. I lived out in Western Maryland for a while, where you can see some Constitution Party signs when election years roll around, and they're Methodists out there, not Southern Baptists.
I'm not sure how trustworthy the census ethnicity data is, since I don't think the Anglos were genocided; I'd trust Woodard before the census data, with the caveat that everything out past Michigan (and possibly including Michigan) had enough non-Anglo Germanic immigrants that it's not really Yankeedom anymore. (Woodard's map is in general not a good guide to current cultural distinctions, but it's not trying to be. The Tidewater region doesn't really exist anymore; in its place, there's the Eastern Corridor, which runs up from northern Virginia (maybe even Richmond) through DC, Baltimore, and Philadelpha to NYC and Boston. Some people call this general region the Mid-Atlantic, but that obscures the difference between the DC/Baltimore area and everywhere else in Maryland.)
And in case I wasn't clear, I do think the "NRx-lefty" attitude is common among progressives.
I don't know who counts as what - it's pretty confusing, and that's why I just went with Völkisch, since I'm guessing your defining criteria is not really religion or genetics but some mix of culture, ideology, and physical appearance and you know it when you see it and it's loosely German-American.
The thing is, I don't think believe members of the populations you outline actually consider themselves as a tribe, at least not in the ethno-nationalist light that you're using (If they did, there would exist a simple word to describe them). Would you agree that their is a certain artificiality inherent in constructing an ethno-national identity around this group?
Through LessWrong, I've discovered the no-reactionary movement. Servery says that there are some of you here.
I'm curious, what lead you to accept the basic premises of the movement? What is the story of your personal "conversion"? Was there some particular insight or information that was important in convincing you? Was it something that just "clicked" for you or that you had always felt in a vague way? Were any of you "raised in it"?
Feel free to forward my questions to others or direct me towards a better forum for asking this.
I hope that this is in no way demeaning or insulting. I'm genuinely curious and my questioning is value free. If you point me towards compelling evidence of the neo-reactionary premise, I'll update on it.