Bandcamp is one of the biggest indie music platforms in the world. And their music review publication, Bandcamp Daily, features their artists.
It’s free to create an account and upload your music.
Preferred genres: EDM/Electronic, Folk, Hip-Hop, Lo-fi, Pop, R&B/Funk/Soul, Rock, Singer-songwriter
How to submit: you have to have a fully completed Bandcamp page (which is free). Then you can Tweet at BD’s contributing writers.
Also, Bandcamp keeps an eye on which artists are buzzing. They base it on stream counts, sales, preorders, and new uploads.