I have never played a propper Divinity game. I've played Divinity Dragon Commander, but that's another genre entirely. What exactly are they?
D:OS2 is isometric party-based CRPG, similar to and inspired by Interplay's CRPG from late 90s, like Planescape: Torment, Baldur's Gate 1/2 and Fallout 1/2.
In last few years, genre is in renaissance, notable examples being Shadowrun Returns, Wasteland 2, Pillars of Eternity 1/2, Age of Decadence, Torment: Tides of Numenera and of course Divinity: Original Sin 1/2.