Does someone know the exact model that was originally used before being replaced by FLUX? I know that it was a version of Stable Diffusion, but there are many models that are modeled after or finetuned versions of Stable Diffusion. I plan on creating another plugin that brings back the original, and maybe hosting the image model being used. But I would need to know which exact model it was, assuming it is open source. I assume there might have also been some in house training as well.