The model can be found on Civitai under the name Comradeship XL. The model was posted onto that website by user Polyx.
Given how wide the grasp of this checkpoint is, I do not believe any suggestion would be entirely accurate or reliable, thus you are heavily encouraged to check the runs in the gallery, despite them only being 25.
General Suggestions:
The prompts here do NOT guarantee the best outputs, which are generally subject to your tastes.
Pos: masterpiece, best quality, newest, absurdres,
Neg: low quality, worst quality, normal quality, text, signature, jpeg artifacts, bad anatomy, old, early, weibo username, deformed hand, fused fingers, extra digits, fewer digits, extra arms, extra legs, missing arm, missing leg
Clipskip 2
Euler A 20-30 steps
CFG 6-8, preferably 7
Try out some random runs you find on Civitai
Because many Pony models, namely AutismMix are inside the mix, scores should work