I usually can't do any background noise with a pattern but there are a handful of albums I've listened to hundreds of times while working over the years in the same way I think you're talking about. I ended up finally ripping them from old cd's because every year Spotify would tell me that I basically no other music mattered to me in comparison ¯\_(ツ)_/¯
I also listen to mynoise.net (a gem of the internet) pretty often. Over the years a few of their tracks have become mentally associated with a sort of calm productivity for me