Does anyone know how to achieve (replicate) these kinds of graphics / looks from MMD videos like on Iwara?

[nenexgod]

They all have that smooth shadow with rim light (occasionally) from what I can see. I assume they are all using KKUTS?
Exampe:
- https://www.iwara.tv/video/yPAHZhQh...ide-her-and-soon-became-my-personal-plaything
- https://www.iwara.tv/video/plbcAhnwlZKTuS/70-wuwa-tiktok-series
- https://www.iwara.tv/video/oTzzhAsZS2YvUx/chisa

 

[Switzerland]

could be a custom shader used? Good luck with the search though

 

[nenexgod]

could be a custom shader used? Good luck with the search though

The other “less popular” shader I could find is Az Shader. I wish it had a better document though