The series you described at the beginning would be a fantasy. There's only how much you could stretch the suspension of disbelief before it becomes a fantasy. Anyways, I wrote about series that aim to be realistic. Take Doctor Who - a series starring a time travelling alien can have a detective lizard lady and her girlfriend in Victorian era without it being particularly weird, why the hell not?
Anyways, you are focusing on opression. I am focusing on "what makes X minority X minority". Did you know that Batman, Batwoman and Harley Quinn are Jewish, Robin I is Roma, Batgirl I become disabled heroine Oracle, Robin II is mixed enough to reasonably suspect a Chinese asassin was his mother, Batgirl II is a neurodivergent mixed race girl, Robin IV is a working class teen mom, Robin V is mixed race, with Middle Eastern ancestry on both sides? Probably not, because the comics barely aknowledge those aspects in most cases (Batman, Batwoman, Harley Quinn, Robins) or those versions don't appear outside comics (Batgirls). I want stories that focus on the characters' minority status in-depth. And that requires intense research by the creators. I almost never see that in Western stories.
Actually seeing a character taking meds for psychiatric disorders would be great, but with Western fiction the portrayal would most likely be a character saying out of nowhere "By the way, I'm bipolar!" and it's never mentioned again, like Batgirl's roommate being transgender (honestly, she says that out of nowhere and it's never mentioned again, not even background gadgets or trans flag or anything, if you missed that one chapter you will never know).
I believe my position is well explained in an essay I wrote on queer representation in children's media: https://archiveofourown.org/works/18208784/chapters/50177957