30 Adam Lambert Adele Apocalyptica Ariana Grande Avril Lavigne Backstreet Boys Bo Bice Britney Spears Cassadee Pope Cher Lloyd Childish Gambino Christina Aguilera Coldplay Conan Gray Demi Lovato DNCE Ed Sheeran Gary Barlow Jessie J Justin Bieber Katy Perry Kelis Kelly Clarkson Kesha Lana del Rey Leona Lewis Lewis Capaldi Lisa Lizzo Måneskin Maroon 5 Nick Carter Nick Jonas Pink Post Malone Robyn Selena Gomez Simple Plan Taylor Swift The Veronicas The Weeknd Tove Lo Usher Various Artists William Clark Green Zara Larsson