The only one of all those I remember having read anything at all of is Watchmen, and that was only a few pages in a store once. I guess my idea of comics is quite different.
So no surprise then that I did rather better on the ones who made it big in the movies, or in books (Elric), or mythology (Loki). Or in the case of Wonder Woman and Superman, simply through pop culture in general, I guess.
Luke Skywalker I should've gotten from the twin sister hint, but I really wasn't thinking in that direction.