Well, as a guy that grew up on modern rock bands like Alter Bridge, Foo Fighters, Sixx: A.M., Breaking Benjamin, etc. and dabble into certain prog and metal bands like Rush, Iron Maiden, and DT, I think the two band/artist that not a lot of people expect me to hear and like is Zac Brown Band and Ed Sheeran.
I enjoy the songs and albums that Zac Brown Band does and they do more than just be a typical country band. They do covers of all kinds of acts like Bob Marley to Beatles to Metallica to RHCP and everything in between and does jams in their live shows, and have some strong instrumental sections in their songs. One of the big allures of them to me is their harmonizing. They have some strong harmonies in the vocals in the song that makes it really hard to not sing along.
As for Ed Sheeran, some of the singles are really not for me like Don't and Shape of You (especially Shape of You, hate that song), but he's got some pretty good ballads and good acoustic songs and some good pop songs and has a good aura. Out of all the "pop stars" in the music industry, he's probably the only one I like. All the other pop stars out there like Beibs, Beyonce, Swift, Adele, Lady Gaga, etc. I just don't care about them or their music. Ed Sheeran, though, he's got a good aura and made some good songs and I'm glad there is a guy like him that is as big as he is.
So yeah, guys like Ed Sheeran and Zac Brown Band, I wouldn't care much about their contemporaries in either country or modern pop, but if those guys make albums, I'll listen to it and I'm sure to enjoy it. Heck, both acts released albums this year, and I rated both of them pretty highly.