Schönwert's newly discovered archive of fairy tails from Oberpfalz

The Grimm tales seem to have been a little selective - but there are lots and lots of other collections. One compiled by Schönwert has been in the news lately, but a response to its appearance by Jack Zipes lists many others. I wonder what kind of indexing has been done of these in terms of tropes and story structure? I'm getting more interested in this kind of thing.