i think the first manga you mentioned is this: https://www.mangago.zone/read-manga/raion_gotoki_no_kuni_kara/
and here are few others with a list i recc too:
List: https://www.mangago.zone/home/mangalist/290509/
Manga/hwas:
https://www.mangago.zone/read-manga/mother_s_spirit/
https://www.mangago.zone/read-manga/between_coincidence_and_inevitability/
https://www.mangago.zone/read-manga/ou_sama_to_puppy_love/
https://www.mangago.zone/read-manga/eyes_clouded_by_the_tiger/
https://www.mangago.zone/read-manga/smyrna_capri/
These are all GLs:
https://www.mangago.zone/read-manga/let_me_give_love_to_you_i_will_give_a_flower_to_you/
https://www.mangago.zone/read-manga/flower_flower/
https://www.mangago.zone/read-manga/umi_to_anata_to_taiyou_to/
https://www.mangago.zone/read-manga/temptation_of_shiro_gal_kuro_gal/
https://www.mangago.zone/read-manga/always_human/
https://www.mangago.zone/read-manga/night_owls_summer_skies/
https://www.mangago.zone/read-manga/boyish_girl_x_gyaru/
https://www.mangago.zone/read-manga/a_handsome_tanned_girlfriend_who_s_easy_to_please/
https://www.mangago.zone/read-manga/kimi_ga_shinu_made_koi_wo_shitai/ (side couple)
I remember reading a manga about a Japanese guy and a tall African exchange student and I wanna ask you guys if you know any bls or gls with black or brown characters
I remember a bl with an Arab guy too
Just gimme non pale characters please at least one of the MCs