It's important to consider that Japan, the source of most of this manga and anime we consume is actually less LGBTQ+ friendly than a considerable number of western countries. There's culturally acceptable phenonema like S-Class friendship and yaoi which can have very little to do with actual LGBTQ+ representation. Anime also subsists heavily on disc sales, they can't risk alienating part of their audience.
Manaria friends: Part of a larger franchise often featuring male protagonists. Declaring those two 'off-limits' to the PC could hamper people's interest in the series.
Yuru Yuri: Literally means something like soft Yuri. It's designed to tease. The author doesn't shy away from clear gay stuff, it's just not the focus of the series
Amanchu: The 'perfect couple' was supposed to be friendship all along and in her panic of writing a relationship that could be construed as more than friends the author had to create a love interest whose only purpose was to show those two were really friends and nothing more.
Izetta, Akuma, Flip Flappers. I'm.... pretty sure all of these are confirmed Yuri. Kisses were probably just avoided in Izetta and Akuma to draw a larger audience / avoid alienating or pidgeonholing the series.
I mean, Flip Flappers had an entire episode dedicated to Cocona trying to pin down her attraction to Papika. They openly declare their love to each other multiple times. No kiss was a disappointment but the girls had a wedding dress moment.
When consuming Yuri, it's important to keep in mind that the genre was born in a culture with different norms and quirks. It's a genre that's evolving to this day. Maybe one day we'll see more kiss scenes that are designed for tittilation of the audience but a confirmation of affection between two characters.