Unfortunately not very many, but a few! Sorry this took me like a week to get back to you; I had to consult with @animatedamerican and…I was avoiding my responsibilities, to be honest (yes, there’s a point at which tumblr messages count as “responsibilities,” somehow).
But I can point you towards Terence Chua, whose niche seems to be songs about Lovecraft to the tune of ABBA, and
Errol Elumir, half of Debs & Errol, Debbie Ohi, the flutist (and sometimes propsmaster) of Urban Tapestry, also a children’s book author, and Ariel “Abbie” Cinii, who I unfortunately can’t find any recordings of, so here’s her blog, but she did win a Pegasus Award and is also a writer.
I know there are more, because I’ve run into a few and not gotten their names, so if anyone knows any more please send suggestions! Even if it’s just “hello I am not white and into filk but don’t really perform” because that’s still filking and I want people to make friends.
xpost from my mainblog because it’s relevant, and because there’s a much better chance of me tracking down more Filkers of Color over here