Idk what type of monsters you are exactly looking for but here some of them
https://www.mangago.me/read-manga/the_monster_and_the_beast/
https://www.mangago.me/read-manga/madk/
https://www.mangago.me/read-manga/soara_and_the_monster_s_house/
https://www.mangago.me/read-manga/shotgun_boy/
https://www.mangago.me/read-manga/sweet_home/
https://www.mangago.me/read-manga/caterpillar_girl_and_bad_texter_boy/
https://www.mangago.me/read-manga/shokuryou_jinrui/
I've read the first three but not the last four, tysm. I was just looking for literal monsters, the sort that are ostracized or commodified in the way that madk portrays them.
I read the caterpillar one first and I cried so much that I got a headache- rahhhhhh
looking for recs, as titled :)