They're called Low-Rank Adaptation models, or LoRAs for short. They can be trained in less than 20 minutes to mimic a certain artist's style or a certain character's look and serve to complement the biggest models. With this, not a single penny will go to a commission. Its so over artist sisters... I guess that's it...
I'm gonna have to figure out how to do any of this shit tomorrow when I have time after work.
https://rentry.org/lora_train#what-is-a-lora
https://rentry.org/hdglorarepo