If you are like me and just starting with the generation of art through stable diffusion, there are so many things you have to learn, try, break, download, etc. One of the things that was confusing for me was why there are so many different "models" out there. Each one is how the AI is trained in what makes what. As you can see in the pictures, the simple prompt of "A man" and "A red ball" gives many different results(I only let it render for 65 steps so some images you can tell what is going on, but they are not refined). Realistic looks.. well real with both. Perfect has a real looking man, but the ball is odd. Then with Abyssirange its anime/cartoon. Each model has its own style. People, or you, can train a model to whatever you want depending on time and know how. Careful not to get too many of them as many of them are 2GB at the least. Test which one work better for your needs. Also note that some models are censored so any naughty bits are just black rectangles or those words