Someone put out a really compelling one a couple months ago:

https://www.reddit.com/r/StableDiffusion/comments/yj1kbi/ive...

I've been sending emails to the creators of mid journey to scrape the entire archive over at spriters resource to create a custom model specifically to generate pixel sprite sheets.

https://www.spriters-resource.com

Fingers crossed.

I'm interested in following your project if you have a blog or anything.