I've played a lot of JRPGs, like Tales, Xenoblade, SMT, Final Fantasy... And I've been trying to get into WRPGs recently.
The games and series that I've been looking at:
- GreedFall
- Mass Effect
- Dragon Age
- Knights of the Old Republic
- Divinity: Original Sin
- Deus Ex
Of the games you've listed, start with Mass Effect, and if you manage to power through all of the jank, be prepared for one of the greatest of all time WRPG experiences with the followup. If it matters, ragdolling enemies off of cliffs, or into space with biotics was a hell of a lot of fun at least in the first game. You basically get to play as a "space wizard" in that game, and it was the first time I felt like I was actually playing a force user, despite having already finished the KOTOR games.
Divinity: OS is a good game in its own right, but the sequel, which has a stand alone story is a huge improvement in most ways, and if you can only play one of them, play the second.
I don't honestly know what to say about Deus Ex either. The original is a fantastic game, but you might consider it way too dated, especially compared to Human Revolution and Mankind Divided (both of which are worth playing).
As already mentioned, Baldur's Gate 2 is very much worth playing, but it does have somewhat of a steep learning curve if you aren't used to those kinds of games by now.
Also, I don't know what your preferences are as far as gameplay vs exposition goes, but a great many seem to want to espouse Torment as the greatest of all time RPG, but I just can't agree. It has a great story, but you are more or less reading a visual novel. I would say that Baldur's Gate 2 is simply the much better
game in just about every way.
I didn't find the combat very interesting in either of them.
Gameplay, and story. If it's worth anything, I'm also a big fan of action games like Ninja Gaiden.
Uh, there aren't really any "RPGs" that fit that bill TBH, and especially not one from a Western developer. The only games that I can think of that sound like that would be Nioh, Dragon's Dogma and basically all of the Souls games, but none of them are really "WPRGs". Hell, they are barely passable as "JRPGs".
If you did not like the combat in TW3 (I didn't either, and not because it was "too hard"), I don't think you'll like the combat in any WRPG that is in real-time.