Not sure if it is niche, but focused on one South Asian music genre -- been working on this personal project to compile, and collect resources from reliable sources along with mapping lineages of people. Also, I archive a lot of music for this genre from different sources before it vanishes from internet!

https://www.qavvali.com/

EDIT: I have one more page but that is not in navigation yet for people not familiar with the genre. The site is still work in progress -- if you have any feedback, please do leave it here, on the website if you can. The content curation is the most tedious part! https://www.qavvali.com/tradition/