Via website Siliconera, here's a breakdown of companies that Grasshopper has worked with, and the titles that were produced. Companies such as D3 Publisher that hired Grasshopper for audio assistance are not listed as primary business partners.
ASCII: The Silver Case
TECMO: Fatal Frame IV
ELECTRONIC ARTS: Untitled horror game
MARVELOUS INTERACTIVE: Contact / No More Heroes
UBISOFT: No More Heroes
NAMCO BANDAI: Samurai Champloo / Blood+ One Night Kiss
Q ENTERTAINMENT: Untitled horror game
SEGA CORPORATION: Shining Soul II
SPIKE: Michigan Report from Hell
SQUARE ENIX: ???
Also included in this list of primary business partners are platform holders Sony and Microsoft. But Square Enix? Sure, we knew that Suda was working on something with EA, but did we know about Square Enix? We do now.