Most of this is just going to be me battling with my memory.
Final Fantasy I (emulated), II (emulated), III (emulated), IV, V (emulated), VI, VII, VIII, IX, X, X-2, XII (emulated), Mystic Quest
Final Fantasy Tactics
Chrono Trigger
Breath of Fire I, II, III, IV, Dragon Quarter (emulated)
Persona I, Persona II Innocent Sin (emulated), Persona II Eternal Punishment, Persona 3, Persona 3 Portable, Persona 3 FES, Persona 4
Shin Megami Tensei Nocturne
Radiant Historia
Vagrant Story
The Legend of Dragoon
Front Mission III
Lufia I, Lufia II
Shining Force I, II, III (chapters emulated), Sword of Hayja
Pokemon Red, Blue, Yellow, Silver, Gold
Warsong, Langrisser II (emulated), Der Langrisser (emulated), Langrisser III - V (all emulated)
Terranigma (emulated)
Soul Blazer, Illusion of Gaia (even beat the secret boss)
Ogre Battle: March of the Black Queen, Tactics Ogre, Ogre Battle 64
Earthbound, Earthbound 0 (emulated), Mother 3 (emulated)
Yggdra Union (emulated)
Valkyrie Profile I, Valkyrie Profile II (emulated)
Dragon Force I, Dragon Force II (emulated)
Princess Crown (emulated)
Rudra no Hihou (emulated)
Tales of Phantasia, Eternia (Destiny 2 on PSX), Tales of Symphonia
Dragon Warrior I, II
Beaten a few of the yS games but genuinely can’t remember which ones.
Lunar Silver Star Story, Lunar Eternal Blue
Riviera The Promised Land
Wild Arms I, II
The World Ends With You
Dragon’s Dogma, Dragon’s Dogma Dark Arisen
Demon’s Souls, Dark Souls I, Dark Souls I PtDE, Dark Souls II, Dark Souls II SotFS, Bloodborne
Castlevania Symphony of the Night, Aria of Sorrow, Dawn of Sorrow, Harmony of Dissonance
Live-A-Live
Romancing SaGa I-III (all emulated, many of which were incomplete translations at the time)
Xenogears
Super Mario RPG
SaGa Frontier I, II
Skies of Arcadia
Secret of Mana II (aka Secret of Mana SNES), III (emulated), Legend of Mana
Parasite Eve I, II
Star Ocean II, Star Ocean (emulated)
Grandia I, II
Robotrek
Shiren The Wanderer (never actually beat but I’m going to say I put in enough time)
Phantasy Star Online, Phantasy Star Online Blue Burst
EVO Search for Eden
Nier
Magna Carta (technically kRPG)
Barkley (counts I guess?)
Fire Emblem Sacred Stones
Stuff I haven’t finished (and probably won’t)
FFXIII, FFXIII-2, FFXIII Lightning Returns (these are just bad)
Suikoden 1-5 (never got into them, tried really hard, just always found myself getting bored)
Chrono Cross (got to the end of it, left at some point and never came back)
Bravely Default (meh)
Dragon Quest VIII (emulated - also meh)
Disgaea (emulated - was mildly amusing but battles took so long)
Makai Kingdom (see Disgaea)
Phantom Brave (see Disgaea)
.hack series (played almost every game in this series but never made it very far - didn’t grab me)
Xenosaga (played every game in this series and boy oh boy is it boring)
Quest 64 (rented once, didn’t care much for it)
Phantasy Star series (most of it was not visually appealing enough, even when I was playing them in their era)
Magna Carta II, Magna Carta remixes (most of these were just really, really bad)
Golden Sun series (meh)
Brave Fencer Musashi (meh)
Fire Emblem series (feel like I’ve played at least some portion of these and rarely if ever came back to any of them)
Luminous Arc (meh)
Valkyria Chronicles (not feeling it)
Tales of Zestiria (anime-est of games I’ve played in a long time)
I think the only traditional jRPG I played last year was Zestiria (for a total of 53 minutes). Welp, this list is long. I played most of these as a kid. Part of the reason I completed so many I think is because a good 90% of these came from Blockbuster, and thus I felt I just had to blaze through them, believing that I might not get another chance to play them (which in many cases, was true, at least when I was a kid).