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

Anime released on VHS by Manga Entertainment/Manga Video in the UK. If you have any additions or corrections let me know.

(note: this does not include hentai as the stack would have to remain unlisted if it did)

Part 2: https://myanimelist.net/stacks/31685

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.