Your usage of "RPG" is both a little loose and pretty vague. Based on the list of games you mentioned, I'm guessing you're mostly interested in story-heavy, action-based games with some form of character progression.
First, a bunch of games which mostly fit the criteria but which you've probably already played or heard of: Fallout 3/4/NV, Mass Effect series, Vampire, GTA, Read Dead, Deus Ex HR/MD, Bioshock series, Witcher 1&2.
Kingdom Come should scratch many of your itches. Its a bit eurojank, but you enjoy Bethesda games, so it shouldn't bother you much. With a little more tolerance, you might also enjoy ELEX, from the makers of the Gothic series.
Since you're gonna check out Stalker, I'll also recommend the Metro series, as long as you don't mind a more linear experience.
Definitely try Prey if you liked the Bioshock games, or if you're old enough to have played System Shock. Same goes for the Dishonored games.
I have no idea if Vampyr is good or not but it ticks enough of the checkboxes to be worth a look.
The new Tomb Raider games are a little bit of stealth-action, little bit of third-person shooter, little bit of platformer-puzzler, with a little bit of upgrading and exploration. You'll probably like them, at least a little bit.
The new AC games are the closest the series has gotten to being RPGs, and they're pretty well liked. In fact, Ubisoft does a ton of open-world sandbox-style action games with mild-to-moderate RPG elements, so you might enjoy the Far Cry and Watch Dogs series.
The Borderlands series has more in common with Diablo-style aRPGs than with the titles you listed, but it can be played solo and has some decent bits.
I couldn't get into them because of the party-based tactical combat, but the Dragon Age series might be of interest, and supposedly Inquisition can be played more-or-less as a straight action game.
Dragon's Dogma is last-gen, but there still hasn't been another RPG quite like it and it's definitely worth a shot.
The Soulsborne series can be pretty polarizing, and is popular enough that I'm not even sure it's worth mentioning, but they aren't considered masterpieces for nothing. If you like these, you'll probably enjoy games like Nioh or The Surge, although they aren't as good. Also if you like the Soulsborne series, and aren't adverse to 2D indies, then Hollow Knight is pretty fantastic.
Do you have a PS4? If so, try Horizon, the new God of War, maybe even the new Spider-Man and Last of Us.
And although I see you don't want anime, I'd still recommend Nier: Automata. I can't stand anime, and there were a lot of cringey moments, but it's still one of the better games of 2017.
Lastly, a handful of more offbeat suggestions that I nevertheless really enjoy: Hellblade, Undertale, Alice: Madness Returns, ECHO, Hyper Light Drifter, Ruiner, Okami, Transistor.