During the home office times I recently figured out that my productivity correlates with the kind of music/acoustic environment I'm listening to, actively or just by background noise. I was looking for mechanical keyboard typing sound and played this in parallel to the music I'm usually listening during work.
I found an awesome youtube channel named Winter Whale ASMR. There are all kinds of background noise videos available. The channel even hosts livestreams of different backgorund noises, no matter whether one considers this to be useful or not. I like experimenting with these audio tracks and my personal mental performance. Also, if you don't like bloaty videos you can use some online services for that like noises.online or blissfullnoises.com