Looking at the credits for this version of Sorcerian (
https://www.youtube.com/live/9D3RVpf...0jtU6Jv&t=6131,
https://www.mobygames.com/game/26117...oplatform=true), I recognized the name Hiroshi Kimura (木村 浩; same kanji as
https://vgmdb.net/artist/11698). Considering the fact that several other former Irem employees are also mentioned (Shin'ichi Yamamoto/山本新一, Takumi Kawai/河合匠, Syu Sato/佐藤修, Tsutomu Sakata/坂田勉), as well as the fact that this Kimura and Syu Sato were also mentioned in Falcom Classics II, this Kimura is likely the same person as
https://vgmdb.net/artist/11698, thus making him the only possible candidate to have made this version's soundtrack arrangements.
This of course makes the fact that Hiyamuta went uncredited in Falcom Classics II all the more inexplicable...