Most progressive metal has clean vocals so you should probably focus on that. Symphony X, Dream Theater, Blind Guardian, etc. Also some djent bands like Periphery, Tesseract or Textures. Not a fan of clean vocals in djent myself, but you might like it. Isis's album In the Absence of Truth also has clean vocals, and later Neurosis albums. Clutch, Helmet and Corrosion of Conformity have clean vocals and are great too. If you're into Sabbath type stuff I'd go with Electric Wizard. As far as melodic metalcore goes, I like Thrice, Twelve Tribes, Haste the Day, the first two Of Mice & Men albums, etc. There are an asston of mediocre bands in that genre though. Good luck. Sent from my Galaxy S8+ (SM-G955U) using Tapatalk