Yuri on top

I don't remember how hardcore these were, but they're all uncensored:

https://www.mangago.zone/read-manga/beast_of_blue_obsidian/ (violence, blood and gore, slavery, human trafficking, sexual assault, child sexual assault, torture, dub-con)
https://www.mangago.zone/read-manga/addictive_bing_zi/ (BDSM)
https://www.mangago.zone/read-manga/otome_saku/
https://www.mangago.zone/read-manga/shoujo_sect/
https://www.mangago.zone/read-manga/love_only_the_body/
https://www.mangago.zone/read-manga/the_promiscuous_relationship_of_the_president_and_vice_president/
https://www.mangago.zone/read-manga/girls_in_bloom/
https://www.mangago.zone/read-manga/office_sweet_365/
https://www.mangago.zone/read-manga/to_my_neighbor_angel/ (in all chapters except the last two the FL has a dick)
https://www.mangago.zone/read-manga/this_brat_is_constantly_thirsting_for_step_mommy/ (one-shot)
https://www.mangago.zone/read-manga/desire_in_the_dark/ (one-shot)
https://www.mangago.zone/read-manga/ojou_sama_to_maid_san_ga_yuri_yuri_suru_manga/ (one-shot)
https://www.mangago.zone/read-manga/hottie_s_heel_uncensored/ (one-shot; BDSM)
https://www.mangago.zone/read-manga/aki_chan_is_thinking/ (one-shot)