I tried several settings in SongKong (5.12 Pro). I always have songs that end up with a number instead of the musical genre.
My current setting is as follows:
Genre : Always replace values from Discogs Style and Genre : Max No 2
Grouping: Always replace values from Discogs Genre : Max No 1
However, I did not find any numerical references at Discogs for gender and style.
For example :
This song is referenced by Discogs
However, SongKong has tagged 96 and 98 as a genre.