Recommendation needed!!!

I haven't read Hellsing yet but try these:
https://www.mangago.zone/read-manga/from_the_red_fog/
https://www.mangago.zone/read-manga/baraou_no_souretsu/
https://www.mangago.zone/read-manga/funouhan/

Similar Artstyle but not story, the mc lowk looks like a less fucked up version of alucard
https://www.mangago.zone/read-manga/sangyang_the_wanderer/

i haven't read any of these, but trinity blood is known for it's gothic and vkei leaning artstyle, and blame! kinda reminds me of bacterial contamination miku if you know what im talking about. you could also try checking lists ?

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

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

i see you everywhere

I am everywhere. I’m in ur walls rn