So. As the title says, I’m trying to create a list of list of all JRPGS - be they traditional, tactical, action or anything in between - on Steam with two simple criteria:
-Japanese developed
-Not Doujin

Would appreciate any mentions of others I forgot.

Falcom:
-The Legend of Heroes: Trails in the Sky
-The Legend of Heroes: Trails in the Sky SC
-Ys I & II
-Ys: The Oath in Felghana
-Ys VI: The Ark of Napishtim
-Ys Origin

Game Arts:
-Grandia II

Idea Factory:
-Agarest: Generations of War
-Agarest: Generations of War 2
-Agarest: Generations of War Zero
-Fairy Fencer F
-Hyperdimension Neptunia Re;Birth 1
-Hyperdimension Neptunia Re;Birth 2: Sisters Generation
-Hyperdimension Neptunia Re;Birth 3: V Century
-Mugen Souls

MarvelousAQL
-Half Minute Hero: Super Mega Neo Climax Ultimate Boy
-Half Minute Hero: The Second Coming

Namco Bandai
-Tales of Symphonia *
-Tales of Zestiria

Nippon Ichi
-Disgaea *

Sega:
-Phantasy Star II
-Phantasy Star III
-Phantasy Star IV
-Shining Force
-Shining Force II
-Valkyria Chronicles

Square Enix:
-Final Fantasy III
-Final Fantasy IV
-Final Fantasy IV: The After Years
-Final Fantasy V
-Final Fantasy VII
-Final Fantasy VIII
-Final Fantasy XIII
-Final Fantasy XIII-2
-Lightning Returns: Final Fantasy XIII **
-Final Fantasy Type-0
-The Last Remnant

* - Forthcoming Release
** - Confirmed, but no store page yet

Updated to add Neptunia 3 and some Genesis games.

Added FFV.

Added. Mugen Souls.

Gurumin is on Steam as well.

Eh, that game is kinda iffy. It's a bit more like a Zelda game than an RPG....I know it's a fine line, and yes I include Ys games, but progressive leveling systems are a BIG part of what makes JRPGs, JRPGS (which is why Sakura Wars games, as a for instance aren't RPGs either).
This is my list, so I won't include it (or Dark Souls which is more like a WRPG)

Updated with stuff that has come out....and DISGAEA.