I'll repeat - I thought gender was the easy part. I was concerned about the name issue, lol.
Artist has credits as both male and female, so the gender should be "other". Otherwise, we credit a dude with being a chick and vice versa.
See, to me, Bruce Jenner will always be a male Olympian. He wasn't a girl competing in the men's events. He was a man in men's events. He can be female in life. But his "credit" was male.
In the case of Carlos, as with the one I found, the credits were from both genders - which makes it different. IMO.
But the "which name" is the sticky part. And it isn't even limited to the trans-gender (see, I learned something) artists. It is applicable to the various Mellencamps and Diddys of the world. Which name do we use - or symbol, in the case of Prince.
I can see where a site that allows free-form prose, like Wikipedia, can get away with choosing one gender - because they have the option of writing a biography that explains the male/female issue, complete with transition timeline. MB does not have that.
Again, I am still new, still learning. I am simply asking the question, and voicing the opinion and thought process. Otherwise, I will do it wrong and get yelled at for doing it wrong.