I've been genning backgrounds for a game of Nechronica I want to run but I'm having a hard time prompting an artstyle that is both consistent and hitting the right tone. So far closest I've gotten is by using the picrel 80s anime ova recommended prompt from this general.

I want something that has a simultaneous feeling of creepiness and comfiness. The campaign takes place entirely underground, in a massive bunker complex run by a swathes of mass-produced, variably sentient undead slaves serving insane masters each running their own petty kingdom.

I'd like some kind of gruesome decaying techno-hell a'la older 40k art, but not so completely grimderp or disconnected from anime artstyle which is used by the characters. Blame! Is something pretty close but too high-tech. I'm aiming at cold war era stuff. Picrel is closest I got to a backdrop of a bunker room turned into shantytown, but I keep getting gens with everything in spacious, neat rows when the place should be a crazy, overcrowded mess. I also want stuff to be more ornamental. The people there have spent hundreads of years living there, do the place should have plentry of artistic flair piled up, even if it was originally just pieces of trash someone carved to pass the time.