I had a coworker (a 60 year old guy, nonetheless) turn me onto a newish (Edit: Okay apparently not new, they've been around 14 years) folk rock band, Lumineers. I'd never heard of them before, but they're pretty good. I just started listening to their stuff so I don't have any particular songs to recommend.
Aside from that, a reddit post turned me onto a band called Mutemath. Not sure what it qualifies as, almost synth rock or something? Stare at the sun is pretty great, but I love everything I've heard so far.
Other than that, I'm still stuck in the classic rock era obsessed with kansas and boston and journey and styx. At least they've got those fun high notes to sing. Too bad I have zero confidence in my singing voice :(