I levelled Lancer and then Dragoon to 50 just to play Heavensward as the Azure Dragoon

I levelled Monk and then Ninja to level 60 to play Stormblood

I levelled Dark Knight to 70 to play Shadowbringers

I levelled Paladin to 80 to play Endwalker

I unlocked Viper at 90 before I began Dawntrail

I only level jobs if they are relevant to the MSQ or a good story.