I liked Tyranny and Pillars of Eternity 2.
They are not action RPGs like Diablo. But i probably liked Pathfinder: Kingmaker the best, of recent years. Kingmaker is a lot like tabletop Pathfinder.
I did not care for Divinity:OS 1 or 2 though others love them.
And if you can stand aged graphics at all, Baldur's Gate 1+2, Fallout 1+2, and Planescape: Torment are all worth a playthrough.