On a the same side, the DRG got only one more button press between 70 and 80 which stardiver, and between 80 and 90 another one which is Wyrmwind Thrust.
Red Mage added actions are only Scorch and Resolution + Magic Barrier and movement tools.
Ninja got 3.5 more actions between 70 and 90, Meisui, Bunshin/Phantom Kamaitachi and Raiju skills.

In a nutshell, most job are somehow complete at lvl 70, and addition past 70 are usually not game changing.