I am using AbyssOrangeMix3 (AOM3)
A weight at around ~0.7-0.9 is recommended, but other weights may also work in certain situations. Just play around with it and use what feels right to you. The weight also differs from character to character. For example Ina needs a bit more, while Ame can do just fine on lower weights.
The prompts are: "Amelia Watson, Calliope Mori, Gawr Gura, Ina'nis Ninomae, Kiara Takanashi".
If you find that the characteristics mix, try adding other character names to the negative prompts.
Let me know if you have any problems!
You can reach me either in the comments or on reddit.