Yor list is quite far from "RPG only".
But if you will lift this restrictions, then:
1.
Crusader: No Regret/No Remorse because of Blackthorne and Doom.
2.
Dark Spyre,
The Summoning and
Dusk of the Gods because of Veil of Darkness (funny, but for me you selected worst of Event Horizon
3.
Simon the Sorcerer 1-3 and all graphic Legend games (that's without selecting words - like Death Gate, not like Spellcasting 101) because of Kyrandia.
4.
Planescape: Torment because of Infinity Engine games. Heck, you managed to miss most impressive of it!
5.
Dungeon Hack because of Eyes of Beholder.
6.
Hammer of the Gods because of Lands of Lore.
7.
Arkania trilogy and
Superhero: League of Hoboken because of M&M.
8.
Arcanum because of Fallouts.
Also check both
Dark Sun games. They are great. You can try also
Dark Heart of Uukrul.
And I see that you even didn't touched any roguelike. Check
Nethack for quick death experience,
Angband and
T.O.M.E. for long game with lot of different loot, skills and monsters or
ADOM for mixed feeling of great adventure in decaying world with deaths, loot and monsters. Warning! There are no (or almost no) graphics in roguelike, so don't be scared by screenshots - games are not about graphics at all.