The Horizon Zero Dawn/Forbidden West OSTs are long and varied, and I love them a lot, especially
Meridian Shining, City on the Mesa, The Good News, White Falls and
Guardian of the Deep (I haven't yet listened to all of FW's OST, it's very very long).
Stephen Barton is a recurring presence on my OST playlists. He did the soundtrack for
Jedi Fallen Order, which I like, and
Project Cars, which is unreasonably good. And! He did
Titanfall 2! (Links to, in order, the JFO main menu theme,
Eau Rouge (Instrumental), and
BT-7274 (Redux))
I fall in love with a lot of soundtracks so to avoid listing just 'games I have played', I'll add just one more: Portal/Portal 2 (try
Self Esteem Fund and
An Accent Beyond). They have different sounds but both work for their game. I used to listen to the album to go to sleep!
All good soundtracks and games which I would recommend, if a bit mainstream!