Or some other John Roberts.
Note that the JR flight was one leg WPB to Teterboro. Epstein’s pilot flew that leg, but he was not flying one of Epstein’s planes - it was a jet in a private air membership program. The log book is the PILOT’s record, not the record of an aircraft. That’s why the logbook records training and simulator time. Roberts, whoever he is, was the only passenger on the flight, according to the logbook. He also probably paid his own way through the jet membership program. It’s important to stick to facts and legitimate inferences. Fanciful speculation makes us all look like a bag of dicks.