Popular is hard to say, also at times undesirable, i go by what i like, so genres like, trip-hop, lo-fi, house, lounge, ambient, world, downtempo, drum n Bass etc. Many of those genres are considered electronic by amg and use style for what i call genre.
Many times albums dont fit so neatly into any of those genres and are instead of combination of one or more. The other thing to mention is that a lot of artists that don't speak english natively, sing in english. No, i'm not talking about ABBA
Maybe its the internet that brought them to my attention, a very welcome addtion.
Some labels of note, not in any particular order, off the top of my head. There are many more that you can look up on discogs.com
Lo-Fi/Downtempo/Trip-Hop : Compost Records, Couch, Ecco-Chamber, G-Stone Recordings, Mole listening pearls, Sonar Kollectiv. Many of those are german or austrian. Ninja Tune, Warp, Eighteenth Street Lounge, Kudos, Pschent, Talkin Loud, Schema etc.
Drum n Bass: Good Looking organisation, Hospital Records.
House/Lounge : Naked Records, Global Underground, Large Records, NRK, Plastic City, Bedrock, Yoshitoshi, King Street Sounds, Little Angel Records, Harley & Muscle, NRK, OM Records, F-Communications, Distance, Guidance, Nordic Trax.
Not the usual stuff you hear on radio by any means, but common on European specialist radio shows. US Radio is not compatible with these genres as ads usually ruin the mood set by the DJ. No ads, no revenue, hence no airplay (again in the US only). So a lot of these artists do club shows and tour around the globe.