This may be the opposite of "chill", but as a fan of old horror who finds comfort in that atmosphere (don't look at me like that), I find the soundtracks to STALKER and Diablo 2 have been my "chill" music lately.
I know people are obsessed on Youtube with "chill mixes" and since I'm going back to college after 20 years, I've embraced these as well. But when I'm writing my essays and trying to keep my family problems on the back burner of my mind, I put on an ambient STALKER mix and listen to calming music, gentle rain, and the comforting moans of eldritch mutants somewhere out in the Cordon.
I like this soundtrack.
This track in particular for the way it begins dreamy floating, like being in a hot shower where the mind is disconnected from worry or concern and wandering at ease, then sudden cool brisk invogorating sections followed by an outro of deep slow grateful breath sounds.
The journey leaves me feeling refreshed and chill. Quick splash for those moments.