Wizardry VII or VIII (or Grimoire)
Underrail
Divinity Original Sin 1
Temple of Elemental Evil
Knights of the Chalice
None of which is a beginner's game, Maybe Temple of Elemental Evil with the Co8 + Temple+ mods, the vanilla game is hard as hell, you'd meet your maker every other corner.
Same for Knights of the Chalice, this one is for veterans or someone in love with turn-based games.
Original Sin 1, on that list, might be the better choice but if you want to start with Baldur's Gate and Icewind Dale, go on, they're not very good games but you'll probably not notice it at first, i know i didn't, it's probably a good introduction to the good games out there.
I'd also recommend against underrail unless you really know what you're up against, (read 2-3 pro reviews and steam useful good/bad reviews ), i like Fallout and i even replayed both with mods recently but underrail ... i really don't get the hype, inventory management is a pain, a lot of backtracking, solo adventurer, that alone is enough to avoid it unless you're fine with it.
You might want to try Might & Magic VI & VII if the graphics doesn't scare you ( i prefer III, IV and V but i think they're more beginner friendly with a more polished UI, well, there is the ugly 3D but nobody's perfect )
When you're seasoned enough, you should try Original Sin 1 and then Wizardry 8 if difficulty doens't scare you (with fast anim and fast turn mods + enhancement mod )
There's also this thread when you're ready for the best :
http://www.rpgcodex.net/forums/index.php?threads/pure-combatfag-rpgs.123730/