Loved your list!
Paricular games on it that i like myself are:
- Hogs of War (a turn based blast with 2 players)
- Silent Hill
- Resident Evil
- Metal Gear Solid
- Crash Bandicoot
- Nightmare Creatures
- MTV Music Generator (a creative, musically inclined, music fan's dream PSX studio)
...and the ones you mentioned that you're not into, but would be if you were into JRPGs, particularly Vagrant Story.
Why that game never got a sequel is beyond me.
Also, i have to agree that FFVII is arguably THE system defining game for the PSX.
Books can literally be filled on this topic, so i will refrain from going further into this, at this time...