Mix of Traditional Instruments that make up "Ancient Civilization" -type music
I love Austin Wintory's work in games like Journey, Abzû and The Pathless where he combines a ton of instruments from different cultures.
James Newton Howard made AMAZING songs for Atlantis: The Lost Empire that go very well with the carved stone, glow and water-adjacent society in it.
Finally, Monster Hunter Games can be super creative with songs that use bells, flutes, handpans, wooden boards and others.
I'm looking for more, not only atmospheric, music that has these elements!