Grant access to admin menu?

I am not claiming this is a canonical list but the user related capabilities I see are:

  • add_users
  • create_users
  • delete_users
  • edit_users
  • list_users
  • promote_users
  • remove_users

I got this working with only list_users and edit_users. I did test all combinations of those, just a few obvious ones. Of course, you may want more capabilities than that.