Name some really underrated mainstream bands....?

BQ: Thoughts on Daryl Palumbo (frontman of Gl Jaw and Head Automatica) I'm asking because he's collabed with one of my favorite rappers on a track and I was digging his singing on that a little bit, and I also saw he provided keys on another song by one of my favorites again. Then today I saw Head Automatica's album "Decadence" was produced some by Dan "The Automator", who's produced many a clic in hip hop. My question is, is he worth looking into? If so, recommend me something you think I'll like.