I'd give MOY to Gabe Kapler and the Giants: 107 wins. Other than Posey, Longoria, Crawford, Bryant and Yaz, I can't think of another player. They didn't even have 1 player with 500 AB's (the Sox had 6).
Cora did fine, but Kevin Cash and Dusty Baker did better. As for coronavirus, everyone was dealing with it. The managers of teams with the lowest case numbers should be applauded as they and their players took it more seriously than others.