All of those are already complete. No loose ends and waiting for chapter releases, yay!
Alice in Borderland (Asou Haro )
A "death game survival" type manga with a heavy focus on the psychological side and utterly fantastic character writing. It's amazing.
Kekkaishi (Tanabe Yellow)
A battle shonen with excellent execution all around. Fantastic characters, very creative and interesting use of a very limited powerset (creating barriers).
Sengoku Youko (Mizukami Satoshi)
Mizukami Satoshi is one of my favorite mangaka of all time. The man consistently writes amazing stories with fantastic characters that take a simple premise and twist it into something utterly engrossing and fresh.
Sengoku Youko is no different.
Also the first and last manga I read that had not a double page spread, but a
five page spread (2 or 3 actually) and it was glorious.
Spirit Circle (Mizukami Satoshi)
Another one from Mizukami. My favorite one alongside Sengoko Youko perhaps, hard to say which I like more because they are so different).
Lucifer and the Biscuit Hammer (Mizukami Satoshi)
I've read this so long ago that I barely remember anything about (except really liking it a lot), and since it's from Mizukami I have no reason to doubt those memories