@exu
Takahashi Tsutomu: he did so many genres, you can just pick one you are interested in:
https://mangadex.org/author/e06ced84-33d2-478b-af7f-175700c689f3/takahashi-tsutomu?page=1

Jiro Matsumoto: you can start with the ‘more’ accessible Alice from hell
https://mangaispolitical.noblogs.org/post/2025/03/17/review-jigoku-no-alice-alice-from-hell/

Atsushi Kaneko: this one that I have reviewed
https://mangaispolitical.noblogs.org/post/2025/03/20/review-search-and-destroy-%e3%82%b5%e3%83%bc%e3%83%81%e3%82%a2%e3%83%b3%e3%83%89%e3%83%87%e3%82%b9%e3%83%88%e3%83%ad%e3%82%a4/

@HeroHelck It’s truly on top in terms of atmosphere, the scale of the artificial, the irrelevance of humans and the absence of nature, what a ride (hike)!

@exu Yes the art has so much personality, but I found that some people hate it. I love the titles you mention, in a similar vein there’s Takahashi Tsutomu (and Jiro Matsumoto if you can stand his gratuitous violence).
And, in a different style of gritty, Atsushi Kaneko is so great.