No, it's not in the text at the original link, however, yes, there is a link to the full article in the blurb with the how: https://www.nationhoodlab.org/the-american-nations-regions-a...
> my Motivf colleagues and I refined the ad hoc models and produced what you might call the “official” American Nations Model spreadsheets for the United States, mapping the regional cultures at county-level resolution.
> This summer, we’ve expanded the analytical model to the rest of North America covered in American Nations.