I have run into a few of these. What a strange list. I'd rather seek a list of catgirl mangas but you do you. But almost everything that I recognize, no they're definitely hentai. How astronomical is your threshold for calling something hentai? If the entire plot is about having sex, it's hentai.
Blue Drop - hentai. Ok, it has a plot, if you can call invading irredeemable manhating lesbian nazi aliens (so feminist aliens) that were constantly having orgies in the evening after spending the day torturing and exterminating men a plot. But that's a hentai plot. Also, what futanari? They copied the memories of a man into one of their own bodies but that's just a regular gender bender. It was all about sex. And other bodily functions.
Boku no Futatsu no Tsubasa - hentai. It's all about the hermaphrodite slut's sexual escapades as she apparently is on a quest to have sex with everyone, with a background plot eventually revealed of "oh by the way she's an alien".
Chichi Chichi - the thing about the big titted girl constantly making her male roommate ejaculate into her boobs every chapter? This you're classifying as "non-h"? That has hermaphrodites in it at some point? Fortunately I didn't read it that far. I wasted too much time on this one just because it was by the same author as koboyashi maid dragon but whether it has a hermaphrodite in it, no this is hella hentai. Again, how high is your threshold?
Mahou Shoujo Neko X - not quite what I'd call hentai but very h, if h means "ecchi". Worthwhile to read once at least though. Deserves to be on list if you say "non-hentai" instead of "non-h", but at least the story wasn't focused on sex, but on the abuse the catgirl tolerates from her adopted brother and her unreasonable patience despite the fact that she could absolutely destroy him with a finger flick in an instant if she wanted.
Mida Love - Hentai. Also, if the succubi who can change sex make this make your list, then everything with characters who can change sex like Ranma 1/2 and Wagaya no Oinari-Sama should be on the list too. I don't believe anyone was ever both male and female at the same time. But I'm not going to reread it to be confident of that statement.
Nyotai-ka - hentai
Murenase! Shiiton Gakuen - ah yes Yena the hyena, if you want to count her as intersexed, but not really. Lanka is the #1 best waifu of all time btw.
Trans Venus - you're joking, right? Hentai.
Tsuiteru Kanojo - I remember that. This deserves to be on the list at least, though it's certainly headed in the hentai direction by the end, though only because the author clearly ran out of ideas.