Club 8

This is a Scandinavian guy-girl duo (Sweden, I believe).  They have a number of albums out (around five I think), and historically their sound has been an extremely mellow pop.  Here is an example of some of their earlier work.  Their most recent album, which was released earlier this year, is a significant shift in style; it's a lot faster and more danceable.  Unfortunately I haven't been able to find much of this most recent album online, check out this video of one of their songs from it.  It's really good, and I highly recommend checking it out if you like their style.

Love Inks

This is a band mentioned to me by my younger brother.  The style of music bears some resemblance to Beach House, or a mellower version of Sleigh Bells or Purity Ring.  It's chill dream wave, and I really like it.  Their recent album "Generation Club" is streaming here; I highly recommend giving it a listen.  The beats are unbelievably catchy.  Their songs will get stuck in your head, and they grow on you with each successive listen.  This new album is their best work to date in my opinion; some of their earlier stuff is less compelling.

MNDR

My youngest brother introduced me to this electropop duo from New York when he came to visit me last weekend.  I really like their sound; it's comparable to the similarly named Ms Mr, but with perhaps a bit more of a poppy vibe.  In other ways the music resembles Mø.  Check out this trippy video for one of their awesome songs.  The (girl) lead singer's voice is also different from the Ms Mr girl's voice; it's deeper, but similarly powerful.  You can listen to their album "Feed Me Diamonds" on their bandcamp site.  I recommend giving it a listen.  However I can't vouch for the cleanliness of all their lyrics.