Here’s the Billboard Holiday 100
Scanning it, I see “Mary Did You Know” (#15) is minor (which is a song I never heard before and had to look up.) Then there’s “Christmas Eve (Sarajevo 12/24)” (#16) which is also minor.
So I should add “God Rest Ye Merry Gentleman” to the minor songs in my previous post. Forgot about that one until Trans-Siberian Orchestra reminded me.
Then I see Carol of the Bells at #52. And then I don’t see anything.
Now I skimmed and listened to several of the songs I had never heard before, so I may have missed another minor song, but of the Billboard Top 100 for last year (and there are repeats, as some songs have charted under multiple artists), I only see three that are in minor keys.