I had an uncle who worked with Agassi back in the 90’s back in FL. He told me Andre was a cheapskate, Sampras was quiet yet an ahole and Becker spent money like crazy. Told me McEnroe may talk a lot but he was super nice if he knew you for a time.
I’ve heard the same about McEnroe from a friend who used to to work for him; very kind, generous and genuine guy off the court.