All resources can be found on CivitAI:
The main checkpoint I use for images in the game is:
"Violetbreed" Slender v2.0 by JujoHotaru
I also use these LoRAs (Low Rank Adaptions) when they're needed:
"Hyperpregnant" v.1.0_[Pony] by Gtonero
"Slime Girls - Concept" v2.0 by Unhing3d