Listen to this radio show on KEXP: https://www.kexp.org/shows/pacific-notions/

It's every Sunday early morning Pacific time but you can listen to recent shows in their streaming archive. The whole show is modern ambient and similar music, it's absolutely fantastic and a great way to hear new artists in the genre.

edit: lol someone already posted it. This should give you an idea of how good this show is if multiple people are suggesting it. I've never heard any other show/podcast/or anything as comprehensive about new ambient music as this one.