Yes, America thought it would fit best if he was white for this costume.
I don’t know how well known it is out in the big world, but in Denmark is common knowledge that H.C. Andersen was omni/bisexual. And unlike with Abraham Lincoln it’s not up for debate, because H.C. Andersen wrote about his love for women and men alike in his diaries, and it even got a mention in some of his friends’ diaries too. In fact, it didn’t seem like he was trying to hide it at all, and he never got in trouble for it. He stayed a virgin all his life though, so Denmark is acting a little out of character.
I won’t tell you what the others are dressed as. I hope you can tell.