Have you looked at retro Diffusion? https://x.com/RealAstropulse

This person shares lots authentic looking ai generated pixel art. This should give the building more realistic pixel art look.

Edit: example showing small houses https://x.com/RealAstropulse/status/2004195065443549691 Searching for buildings

Yup, I'm a big fan. They'd be the first to admit that making true pixel art is very hard, and getting the AI to do it even somewhat consistently requires a lot of tuning and guardrails / processing.

At some point I couldn't fiddle with the style / pipeline anymore and just had to roll with "looks ok to me" - the whole point of the project wasn't to faithfully adhere to a style but to push the limits of new technology and learn a lot along the way