Vettel won four World Drivers’ Championships with Red Bull during Button’s time in F1, while Verstappen burst onto the scene during the 2009 champion’s final years in the sport.
Button also paid tribute to former McLaren driver and two-time champion Mika Hakkinen, whose battle with Ferrari legend Schumacher was the talk of the 1990s and early 2000s.
“The other two are from my early days in F1,” Button said. “Mika Hakkinen. I actually watched the Spa race [in] 2000 where he did Michael. When they both [Hakkinen and Ricardo Zonta], went either side of him. So Mika and obviously the great Michael Schumacher.”
Hamilton, Vettel and Verstappen, meanwhile, will be hoping to get back on track with Mercedes, Ferrari and Red Bull respectively as soon as possible.
The start of the 2020 F1 season has been pushed back due to the coronavirus pandemic, with the opening race now pencilled in to be the Canadian Grand Prix on June 14.