Source was 111 images (1024x1024) from several episodes of Superfriends from 1977 and 1978. Every caption started with "superfr1ends style image, " then I tagged any characters that appeared, so it does great with the main characters (Superman, Wonder Woman, Batman). Doesn't know some of the lesser characters but I was more just trying to train the style and it usually works pretty well. Some random subjects and subjects I assume Flux knows really well can retain a more realistic look, but upping the strength to 1.1 or 1.2 can give it that more cartoon look.
Here are some before and after shots of the same seed of flux1-dev-fp8 and the LoRA
astronaut in a bubble bath haha - looks like some hall of justice action going on in the background there
shrek dunking a basketball in outer space - the LoRA gave him a jersey!
green lantern - flux knows the logo, the LoRA gave us a superhero
wonder woman flying in her transluscent jet - LoRA coming through nicely
with just "cheetah" flux gave us the animal, LoRA nailed it again
flux is close on its own with batman and robin at thanksgiving dinner, love how the LoRA made the food
Hope you have fun goofing around with it - enjoy!