and this last one has just a single collab, with no info or anything (but tidal also has this duplicate, so this last one is probably just tidal’s fault):
Unfortunately, this happens all the time for smaller artists because Allmusic/Musicbrainz editors mess it up
You can hope that Roon reports it based on your info here (which they often do), you can also edit it yourself at the sources if so inclined, or you can merge the artists locally in your Roon.
For merging, you need to ensure that you have an album by each of the individual artist entries in your Roon library. Then select them all and click the merge button that will appear to right. You can choose which one shall survive. (If you don’t know which one because they both have a picture, temporarily append something to the artist name in the editor for distinguishing it)
After merging, you can remove the albums again and remove the name edit, if any.
You can also undo the merge in Roon > Settings > Library
yeah unfortunately i can’t even merge that 2nd one, cause it doesn’t actually have any tracks associated with it
also interestingly allmusic and musicbrainz just have one entry too, and it doesn’t seem to be a spelling thing. Hopefully the Roon folks can figure out what’s going on.