Which colleges have the highest average GPA for graduates?

I am trying to assess which colleges are known to have easier or harder grading policies? Anecdotally, I have heard that Brown’s average GPA for graduates is really high at 3.7. Other schools like Carnegie Mellon have a fairly low average at around 3.

https://www.gradeinflation.com/

Also depends on major

Are you a prospective pre-med or pre-law student?

Which colleges… in what sort of tier? There are thousands of colleges in the US.