18. With her sixth top 10, "Therefore I Am," on Billboard's Alternative Airplay chart, Billie Eilish took sole possession of the most top 10s among solo women or groups with female lead vocalists in the tally's 32-year history (Dec. 5). In February, Eilish earned her third and latest leader, "Everything I Wanted," tying her with Beck and Alanis Morissette for the most No. 1s among soloists.
19. Morgan Wallen became the first artist to debut two songs in the Hot Country Songs chart's top 10 simultaneously, with "Somebody's Problem" and "Still Goin Down" (Dec. 5). The tracks followed his "7 Summers," which opened atop the ranking in August. "We wrote 'Summers' just a few months ago, and I really didn't know if it would even make [an] album, let alone do everything it's done so far," Wallen told Billboard of the song, which will appear on his 30-track LP Dangerous: The Double Album, due Jan. 8. "I can't wait to see what else it does."
20. Bad Bunny earned not only his first No. 1 on the Billboard 200 with El Ultimo Tour del Mundo (Dec. 12), but the set also became the first all-Spanish-language album to reign in the 64-year history of the all-genre chart.
"I dreamt it!!! I felt it!!! I always knew it!!!" the Puerto Rican star gushed in Spanish on Instagram, sharing photos including a childhood throwback of him singing on stage and screenshots of his Billboard chart success. "I have no words, only thank you, thank you, and thank you!!!"
Additional reporting by Trevor Anderson, Jim Asker, Katie Atkinson, Pamela Bustios, Keith Caulfield, Kevin Rutherford, Gordon Murray and Xander Zellner