This list puzzles me, though I can’t really object to most of the choices (I’m definitely a big “fuck no” on Kuttsukiboshi, Love to Lie Angle, Netsuzou Trap and Mai-HiME though as well).
There’s a lot of shows on here I haven’t watched or finished yet, but none I would really contest the yuri content of from what I’m aware of. My rankings would just be…significantly different.
I’m going to disagree with you, Madoka SHOULD be on here because of the movies, but so should Nanoha and YuYuYu. Raising Project I’d only add for Top Speed x Ripple and Snow White x La Pucelle, I didn’t get invested in Sister Nana and Weiss Winterprison’s relationship at all (and I read the novel instead of finishing the anime). Site I’m not going to watch but from manga readers I’m sure the yuri is plentiful enough for people.
I like Maria+Holic, but it definitely doesn’t belong here. It’s a parody of Marimite and Class S tropes (a far better one than Strawberry Panic! IMO) but hardly one that makes any statement on the genre, and I’m not even sure there are any yuri elements beyond Kanako’s lesbianism and the all girls school.
Black Rock Shooter and Pandora in the Crimson Shell I like as well, but I don’t think they really belong on this list. I don’t understand why Blue Drop is on here at all. And as much as I like Kannamiko still, we’ve had so many better shows since, I don’t feel like it needs to be on here. At least, I don’t think it should be ranked that high.
This REALLY needs Symphogear, Flip Flappers! and Kashimashi (which I still need to finish) though. Utena and Yurikuma are JARRINGLY low, and I would completely flip the ranking so that Citrus is on the bottom (although I might still watch the anime one day, what I’ve read/heard of the manga was a huge turnoff).
Tbh all this list really established was that I need to watch more Hidamari Sketch and finish Yagakimi, Kashimashi and Sakura Trick, finally watch Kase-san, Konohana Kitan, Maria-sama ga Miteru, El Cazador de la Bruja, Akanesasu Shoujo, Seraphim Call, Inugami-san to Nekoyama-san, Simoun, Aoi Hana and Sasameki Koto (and read the manga for both), Saki, Bodacious Space Pirates, and Lagrange I guess. Oh and not on here but I also want to see Happy Sugar Life.