BL

zombie/apocalypse

https://www.mangago.zone/read-manga/the_hounds_of_sisyphus/
https://www.mangago.zone/read-manga/rainbow_city/
https://www.mangago.zone/read-manga/a_room_without_space_side_story_1/
https://www.mangago.zone/read-manga/undead_tsuyuhisa_fumi/
https://www.mangago.zone/read-manga/dead_man_switch/
https://www.mangago.zone/read-manga/the_vampire_and_the_zombie/
https://www.mangago.zone/read-manga/believe_my_sign/
https://www.mangago.zone/read-manga/a_dead_crow_s_stare/

No end, its a western webcomic and is free to read : https://www.noendcomic.com/comic/chapter-1-cover
The two main romances are man loving man, and so far there is no other romance but there might be some GL at some point since its a queer comic and not just a BL comic.

This one pure comedy
https://www.mangago.zone/read-manga/zombie_s_dick_is_a_bibibic/

But my fave is
https://www.mangago.zone/read-manga/believe_my_sign/

This one is a light read
https://www.mangago.zone/read-manga/the_last_zombie/

https://www.mangago.zone/read-manga/2013_dawn_of_the_world/

https://www.mangago.zone/read-manga/radio_storm/

https://www.mangago.zone/read-manga/rainbow_city/

https://www.mangago.zone/read-manga/zombie_hide_sex/

https://www.mangago.zone/read-manga/uruwashiki_shuen/

https://www.mangago.zone/read-manga/corrosive/

https://www.mangago.zone/read-manga/boys_of_the_dead/

Survive romance