Student Report Question

I have come across several students who for whatever resasons don’t have their powerschool information linked to their Google sso user.  I am trying to find a way to run a report that will give me a list of the students who have this issue, but I can’t seem to figure out how to accomplish this.  I was thinking of just doing a new view of “duplicate users” but I am not getting any results doing that.

Does anyone have any ideas?

Thanks!