Not sure how unique they are, but these are all isekai GLs:
https://www.mangago.me/read-manga/genjitsu_sekai_real_demo_shiawase_ni_shite_kudasai_ne/ (reverse transmigration)
https://www.mangago.me/read-manga/please_bully_me_miss_villainess/
https://www.mangago.me/read-manga/i_favor_the_villainess/
https://www.mangago.me/read-manga/twisting_tendrils/
https://www.mangago.me/read-manga/fall_in_love_with_the_empress_zephyr_scans/
https://www.mangago.me/read-manga/nightingales_and_roses/
https://www.mangago.me/read-manga/idol_manager_in_another_world/
https://www.mangago.me/read-manga/all_of_humanity_is_yuri_except_for_me/
https://www.mangago.me/read-manga/isekai_picnic/
https://www.mangago.me/read-manga/this_world_is_mine/
https://www.mangago.me/read-manga/starting_the_game_as_your_capture_target/
https://www.mangago.me/read-manga/muryoku_seijo_to_munou_oujo/
https://www.mangago.me/read-manga/is_it_normal_to_raise_a_yandere_heroine_as_a_villainess/
https://www.mangago.me/read-manga/ting_shuo_taihou_he_taihou_shi_zhen_de/
https://www.mangago.me/read-manga/gal_maid_villainess_only_milady_s_happy_end_will_win/
https://www.mangago.me/read-manga/the_moon_does_not_count_sheep/
https://www.mangago.me/read-manga/i_m_a_childhood_friend_and_i_want_to_remain_a_supporting_character_but_for_some_reason_i_became_the_heroine_s_love_interest/
https://www.mangago.me/read-manga/to_whom_the_deer_falls/
https://www.mangago.me/read-manga/twisting_tendrils/
https://www.mangago.me/read-manga/the_onee_sama_and_the_giant/ (violence, gore, sexual harassment, attempted sexual assault)
https://www.mangago.me/read-manga/the_fed_up_office_lady_wants_to_serve_the_villainess/ (age gap, love triangle - A and C love B)
https://www.mangago.me/read-manga/perfect_heroine_wants_to_possess_me_bbl_scans/ (omegaverse)
https://www.mangago.me/read-manga/the_villainess_and_the_woman_who_would_do_anything_for_the_sake_of_love/ (short story)
https://www.mangago.me/read-manga/yuri_anthology_of_another_world/ (one-shot anthology)
https://www.mangago.me/read-manga/akuyaku_reijou_desu_ga_hiroin_ni_kouryaku_sarete_masu_wa_anthology_comic/ (one-shot anthology)
https://www.mangago.me/read-manga/i_m_not_cut_out_to_be_a_princess_so_i_ll_elope_with_the_villainess/ (one-shot)
https://www.mangago.me/read-manga/the_villainess_ruin_is_my_fault_but_i_ll_try_to_make_her_happy_with_the_power_of_the_curse/ (one-shot)
pls give me a unique isekai bl, gl, het, im good w literally anything as long as it’s romance