"The Flower Princess of Sylph" ╮(￣▽￣)╭
some arent classics/super old but theyre always a good read
https://www.mangago.me/read-manga/so_do_you_wanna_go_out_or/ - whats a yuri rec without hdwr modern classic ig
oniisama e - watch the anime (think its on yt) there are beautiful mascs
utena - also watch the anime, yuri but more focused on other themes (on yt aswell)
https://comix.to/title/nnvy-girl-friends - havent read it but many list this as a classic (the mangago uploads r ass hence the comix link)
https://www.mangago.me/read-manga/story_about_buying_my_classmate_once_a_week/ - modern classic ig but its quite popular (and good!) + this is an adaptation of the light novel
theres probably more but im yurinewgen
(good) yuri classics? (=・ω・=)