Subsurface Lighting (PreIntegrated LUT and Spherical Gaussian)

Pre-Integrated Skin with curve approximate and LUT
http://simonstechblog.blogspot.com/2015/02/pre-integrated-skin-shading.html

DiffusionProfile by UE4 SeparableSSS
https://www.shadertoy.com/view/NdBGDz

Spherical Gaussian Subsurface
https://therealmjp.github.io/posts/sss-sg/

Comparison