I really don't think I can confidently give an answer to this. A few months ago I would've said Jhene Aiko but then Twenty88 came out and slayed me so now I'm out of answers.
Fifth Harmony I guess... their songs never appealed to me. I would also say Zara Larson, Melanie Martinez and Halsey but I literally have no idea who these persons are and can't name a single song by them but I see their names a lot on this forum.