The answer has, as it always has been, it depends.

The longer a fight goes on with high uptime, the better Monk and Summoner become. If AOE is the object, Black Mages just win. If Black Mages can just stand there and turret, they do well. In the longest fights, Bard dips down in order to prevent everyone else from running out of resources.

There is no such thing as the absolute undisputed highest DPS class. It's all situational. For example, Monk is the best at Turn 8 DPS, but they generally lose to every ranged class in Turn 9 because they lose uptime more often. Black Mages are still undesirable in fights where they must move a lot.