I popped in the Soma Bringer OST recently. I was thinking about how perfectly its dungeon and field music match the style of Xenoblade 2. For example:
Amati Ruins - The Seal
Run Through the Flames ~ Largo Bridge
Temple of the Sandy Coffin
Snowy Piedmont
The Great Forest, Jounel
Mitsuda really put a huge effort forth on that soundtrack. Not only was it his last full-length RPG OST, it was his last full-length work supervised by Tetsuya Takahashi. I'm hoping Xenoblade 3 will be the real return of Takahashi x Mitsuda (and Kunihiko Tanaka, too).