Had a look at the first one:
Discogs Genre is Folk, World, & Country
Discogs Style is Country
I configured Genre field to get value from Discogs Style and Grouping to get value from Discogs Genre and used Match to Specified Discogs Id it added Country to Genre field but not Folk, World, & Country to Grouping field. This is because Folk, World, & Country is not in in my Preferences:Correct Genres List
Once I added it to Preferences:Correct Genres List
Then reran Match to Specified Discogs Id and Folk, World, & Country was added to grouping
So the issue is simply that Genres/Styles are only added if they are in your Preferences:Correct Genres List

