Midnight Eye: Gokuu II

Before the likes of Saint Seiya, Dragon Ball Z and Pokemon conquering the kids in the west, it was actually Akira that opened the door and made people realize that the cartoons coming from Japan weren't what you would expect from Disney or your TV channels.
A huge flood of VHS tapes came showing animations with mature themes, absurd plots, and enough graphic sex and violence to make parents freak out... what a glorious time!
They don't make cartoons like this anymore.

This is a comprehensive list with stuff from very good to very trashy, but all in the same spirit.
Some early 00's also included.

ps: I also recommend, but can't include here, the second Violence Jack movie, A Kite and Mezzo Forte.

Glorious 80's and 90's (Supernatural, Mystery and Horror)
https://myanimelist.net/stacks/30605

Every cinema or direct to video anime film that came out in 1989.

1988: https://myanimelist.net/stacks/34043
1990: https://myanimelist.net/stacks/34459
https://myanimelist.net/stacks/34460

A mix of 80's & 90's ova series that I have seen.
Some great, some not so much... you be the judge of what's good though.

Yoshiaki Kawajiri is a writer and director of Japanese animation. His most notable works include Wicked City, Ninja Scroll, and Vampire Hunter D: Bloodlust.

Kawajiri received global recognition as a director with his work in the late '90s and early 00's, and caught attention of The Wachowskis which would later lead him to direct a segment, titled Program, of The Animatrix.

Grumpy Jii-san was an anime reviewer and hiking enthusiast. Many of us were fond of him. This is the third part of a list of the anime he reviewed in video order from oldest to newest. They are presented without his score as mild encouragement for you to watch his reviews.

https://www.youtube.com/@GrumpyJiisan