Cartoon Skin Shader for Iray Genesis 3/8/8.1
https://www.daz3d.com/dg-iray-toon-styles-for-genesis-2
https://www.daz3d.com/subsurface-toon-shaders (espeically this one)
Something akin to these for the modern UVs with anatomical features. Right now the best you can really do is use the skin from the 3du Toon Generation figures, or some of the other one off toon figure sets. Finding the right eyes is difficult, most of them have baked on eyebrows without the option to remove them, there's a limited number of skin tones (esp for very pale characters), and the bulk of them are missing anatomical features.
Some of the best of the best of this type are the 3dU figures though they have very limited number of skin tones and no gens, the Toon figures by JoeQuick which are very much matched to the character and some of which do not use the standard UVs, and many of Lexa Kiness's figures on Rendo which also have limited options.