Game Name: Pokemon Heartgold and Soulsilver (2010)
Composed and Arranged by Go Ichinose
seen from China

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Game Name: Pokemon Heartgold and Soulsilver (2010)
Composed and Arranged by Go Ichinose
Game Name: Terraria (Calamity Mod) (2017) (2016 if you're going by the 1.0 release of the mod as opposed to the day the track was posted)
Composed and Arranged by DM Dokuro
Game Name: Ikenfell (2020) Composed and Arranged by: aivi and surasshu
Game Name: Pokemon X and Y
Year: 2013
And a fun fact! Did you know Go Ichinose, a staple composer on the Pokemon franchise, was occupied with other games for the duration of generation 6? His absence from the sound team allowed composers like Minako Adachi and Shota Kageyama to take more central creative roles!
Game Name: Opoona (2007)
Composed and Arranged by Masaharu Iwata and Mitsuhiro Kaneda
Game Name: Magician's Quest: Mysterious Times (2009)
Composed and Arranged by Yasuhiro Tamaki
Game Name: Pokemon Ranger: Guardian Signs (2010)
Composed and Arranged by Kenichi Koyano, Shigerou Yoshida, Keisuke Oku. Note: I'm listing Shigerou Yoshida / Sigero Yoshida here since a good few archives mention his name on the credits, but strangely, he seems to not be credited on bulbapedia. Not sure if that's a mistake.
As for specific composer credits, I dug around for a goooood while on this one, there doesn't seem to be *any* documentation of who did specifically what. Unfortunate!
Game Name: One Step From Eden (2020)
Composed and Arranged by STEEL_PLUS [Keisuke Hayase]