Oddly, although I can use chopsticks to eat, I can not visualize what my grip is from these pictures. It’s delegated entirely to my hand at this point and I don’t think about it any more.

Right hand rule ftw. There was a buffet in my home town called Pi King. They had instructions on the sleeve. Took me a few tries but managed to pick it up as a kid

Nose grip best grip

I’m not convinced many of the grips pictured actually work to pick things up with the chopsticks, much less grip something weighty with them