Are these folders actual folders on your disk, though? Last time I checked I could use Navidrome to browse folders, but it would actually be browsing through albums instead.
Yeah, each of those corresponds to a folder on disk. However, each of my artists is auto-managed by beets[1] so I end up with one folder per artist, including one folder per "feat." artist (like in the screenshot). So this may be a case where my folders happen to align with the artists/albums, which might not work for you.