Verions 9:
I decided to leave version 8 for those who want to play with it, here is version 9.
As for samplers it should be pretty much the usual.
I mostly used DPM++ 2s a in my tests.

Version 8 experimental:
Not 100% sure yet about the samplers, should be similar to V7.5
Also careful with the negatives seems too much can make it worse.
It can be quite finicky but makes a nice film / polaroid style effect if you wan to.
2 things I noticed is it works with Euler a but if can cause issues with Adetailer.
Harder to get it to fallow background prompts it seems, you might have to force them a bit.

I guess the experimental really fits, it looks like you can get some interesting results too without the pony scoring and even some standard SDXL embedding.
Example from what happened to me, can't make elf ears, removed the pony scoring and there they where.

Version 7 and 7.5:
Euler a, DPM ++ 2M, LCM starting 8 steps (12 is better)
DPM++ starting 4 steps (6 or more is better)
DPM++ 2s a might be good too

Version 6:
Euler a Karras cfg 2 8 steps or cfg 3 12 steps
If you get artefacts lower the cfg by 0.5 or up the steps.

DPM++ SDE and LCM seem fine too.

So does DPM++ 2m SDE SGUniform

Version 2:
DPM++ SDE Karras or SGM Unifrom
Steps: 4-8
CFG: 2-3 (1 works at 8 steps, 4 seems ok after 6 steps)

Euler a Karras or SGM Uniform
Steps: 8-12
CFG: 2-3