Wan 2.2 is a video model people have been using to do text to image recently that I think solves this problem way better than Krea in the base model. -- https://www.reddit.com/r/comfyui/comments/1mf521w/wan_22_tex...
As others have said, you can fine-tune any model with a pretty small data set of images and captions and make your generations not look like 'AI' or all look the same.
Here's one I made a while back trained on Sony HVS HD video demos from the 80s/90s -- https://civitai.com/models/896279/1990s-analog-hd-or-4k-sony...