My neighbor got his PhD at Harvard, which means little of course, he's a fine fellow, GaTech professor of physics for 30+ years. His main interest is photography and travel.
I had a boss who was a PhD from Harvard, he was one of the "sleepiest" bosses I ever had. He just didn't care, a state I didn't understand at the time. I was still pushing.
We interviewed some folks from there a few times, I wasn't all that impressed with them, you can find good folks and bad from about anywhere. The elite candidates are all spoken for well ahead of time anyway. They don't interview.