Kaede from That Time I Got Reincarnated as a Slime / Tensei shitara Slime Datta Ken
Keep in mind that settings may vary slightly between different versions. See below for more details.
When I tested this with different checkpoints and LoRAs, it seemed to work quite well.
Pony:
A LoRA weight of 0.8 works great, though you can adjust the strength as you prefer.
Prompts I usually used:
white hair, long hair, low-tied hair, cat ears, bangs, yellow eyes, white kimono, purple obi,