Other than actual biological sexuality as it pertains to mating, attraction and breeding, I think all the things you mentioned would absolutely be impacted, to a massive degree.
Countries? Largely obliterated. Genders? Unimportant. Religions -- they would take a significant impact.
The concept of race was invented just 500 years ago. We might have some innate evolutionary drive to seek out sameness and familiarity, but we just as equally might have a drive to do the opposite, to ensure biodiversity in our species.
The main point I'm making is that all of our meager social constructs would largely fall by the wayside once under the boot heel of a Lovecraftian interference. Heck, a SINGLE alien invasion would probably wipe out most of the social constructs we cling to as a civilization. Marvel and DC writers like to play around still taking the (sorry) dullard approach that none of this would really change mankind at all. The Marvel Universe would still be "the world outside our window". It's kind of infantile and laughable IMO. It's not that I think the people who consider it to be laughable or infantile, only that because it's comic books, I think most people have never actually really paused and considered that very little of what we know and do would remain in a Marvel comic book universe. I mean, at the very least, there would be guaranteed basic income.
These creatures can literally make gold and diamonds from nothing. The Marvel Universe is not our earth, it is a hostile and ALIEN world filled with constant catastrophe
. Literally no one left alive would care about Maggie's pigment or Dave's homosexuality.
That's just my opinion, tho.