Oh, and btw: There is a male version of Scarlet Witch. Wiccan her “son” (quotes used for reasons that aren’t worth explaining in this thread, but only because I don’t want a comic book purist to say “he’s not quite her son”)
There’s also a male version of Mystique currently (Raze) who is a villain terrorizing the X-men in the most recent issue (he’s also part Wolverine, but he’s more just Boy Mystique with claws). I feel like there’s been male versions of Storm before. And there have certainly been male replacements for Phoenix as previously mentioned (Quentin in current comics, and the avatar of the Phoenix in the 1990s version of Guardians of the Galaxy was male).
But yes, John’s point still holds. It is far more common to have the reverse.