Laufey - Like the Movies, I don’t see many people talk about this song but this song have special place in my heart.

If you're alright with japanese song, I think Takayan and Yoasobi's song are great! X / Y / Z by Tani Yuuki is also nice~

The perfect choice to answer this question is OT by NAJ and Janitra Satriani. It's an old song (I considered it as an old since I already heard it from 5 years ago) but turns out this song is timeless. It's a LOFI one therefore you can hear it when you have something to do and need music as a company. For me, it's a good song, but taste is having a tons of reference. It will be better if you give a hear and I'd like to hear your review to this song.

I don’t know if it fits the ‘not many people know about it’ criteria but I remembered being obsessed with this song last year. It’s OH NO! By Cody Lovaas. https://open.spotify.com/track/7LiGptffUbVAtbxzQnvBi9?si=65bctXh1TbmznZHCnEyIWA