Hollow Knight, Ori and Nier have amazing soundtracks (HK has my favourite OST of all time), but people already know about them and posted before me so I'll add soundtracks from games that haven't been mentioned here.
I really liked Stela's (2019) OST, it's mostly melancholic:
Unexpectedly, I loved Genshin Impact's (2020) OST too:
Detroit Become Human (2018) has some incredible tracks:
I haven't played the game, but the soundtrack for Death Stranding (2019) is really good:
Assemble with Care (2019) has a relaxing album:
I would add some Tearaway Unfolded soundtracks but this is a 6 year old game now...