Just going to throw some names out there... smaller names.
Brandon Bolmer, a personal friend of mine. Former singer of Chiodos. Amazing cleans. Can hit high notes. Can hit low notes. Can scream his ass off, and sound good doing it. Amazing stage presence. Also, pretty young. Can handle long-ish sets full of heavy music. Produces his own music so he could have amazing input on future music. Can bring something new and clean to the table.
https://www.youtube.com/watch?v=Ec9j2OwZmbA
Jordan Radvansky, Vocals for Sepharim. Small band. The singer. My goodness. Young. A powerhouse. Nice screams. Can handle LP heaviness. Now... the clean vocal. Listen to him. I can't even begin to tell you how beautiful this fucking voice is. Seriously.
https://www.youtube.com/watch?v=qEs7-eF0uBs