I have been looking around, and I cannot seem to find an answer. The closest lead I had was this link saying you can "copy" your ChemDraw then "paste" into Chem3D. I looked through Chem3D's manual and found no such rendering style as the pictures linked above.
I know Chimera can do Simple Line Drawing but it seems to render small molecules only within the plane. I have seen plenty of examples of proteins, but I am trying to find something for small organic molecules.
I have also found references to the style named after the artist David Goodsell. I have seen this style referred as a non-photorealistic rendering referenced in this sci-hub link, page 11, figure 9. Again, I have seen this shell/toon shading for large biomolecules, but not for small molecules.
Any help would be appreciated. I linked to a few sources above hoping it might help someone else trying to find similar rendering styles.