The artist entry for Professor Longhair currently has sort name “Longhair, Professor”, which I think is wrong. Other artist pseudonyms-that-look-sort-of-like-real-names don’t reverse order: Captain Beefheart, Lady Gaga, Father John Misty, which seems to me correct.
Would this be worth clarifying in the sort name guidelines?
Well, “Person artist names have sort name “family name, given name”” - this isn’t a family name nor a given name, so I’d definitely expect just “Professor Longhair”.
I would expect this as well, just wondering if we need an example or two. Although we’d need to differentiate from pseudonyms that are treated like legal names (David Bowie, Bob Dylan).