I watched the Gimme Sympathy video which was OK, then randomly watched Risk which was much more to my taste. That said, I'll be honest and admit I loved ogling the singer's beautiful legs in the Gimme video. Anyway, lovely legs aside, I'll probe Metric a bit more. My jury is still out on Lizzo having watched two videos, R&B isn't a strong point for me but she seems a better quality example of the genre.
I just recently heard a couple of things by Ghostpoet, do you know his stuff at all? It's got elements of electronica and trip-hop, he's certainly a bit Trickyesque in his delivery. I heard one called something like Nowhere To Hide Now (or Nowhere To Run To maybe) which was really interesting with very nice textures, I recommend it.
Gimme Sympathy is more poppy and accessible. Risk is a great song and has a nice sense of urgency.
I've been listening Pixx so far - quite a diversity of stuff, some more minimalist and some richer. Good sense of melody, with a nice alto in the lead singer. Still have to get to the others.
I know not Ghostpoet, so will add that to the list.