I may be speaking out of turn here as somebody born in this century, but after reading the book
The Man I Knew I have held a high regard for George H. W. Bush. He, like Carter, was a great human who really cared about others.
Again, for all I know, he could have presented himself differently during his term in office, but after his term was up, his life seems genuine to me.
https://www.goodreads.com/book/show/55648822-the-man-i-knew