The actual list:

https://support.google.com/assistant/answer/13971691?visit_i...

Some of these seem useful. I personally find Google Assistant unreliable for the one thing I actually want, adding things to my shopping list. (I discover I need items while my hands are busy cooking.)

It may be because of my legacy workplace account. I'd love to think that the recent change to Keep will fix it but I haven't tried.

Regardless it seems like an arbitrary mishmash of features.