Taylor: Shake It Off, Blank Space, Bad Blood, Wildest Dreams, WANEGBT, IKYWT, Mine, Today Was a Fairytale. (9) {8 if you don't count BB bc of Kendrick}
Katy: Teenage Dream, Firework, ET, LFN, TOTGA, POM, Wide Awake, Roar. (8) {6 if you don't count LFN + ET}
Miley Cyrus: We Can't Stop, Wrecking Ball (2)
Britney Spears: Hold It Against Me, Til the World Ends (2) {1 if you don't count TTWE}
Lorde: Royals. (1) {did Team go top 5? Idk}
Meghan Trainor: All About that Bass. (1)
Gaga: Born This Way. (1) I think, I'm not familiar with Gaga
Selena Gomez: Same Old Love (1) {unless you don't count bc of Fetty, so 0.}
First of all, 7 years? That's a weird cut off. Secondly, she has several solo top tens, so I don't know why 4 top 5's would be struggling. Ur so obsessed with her
Icon is just too generous. Eminem's biggest hits this decade and Drake's two #1 singles (until One Dance) were mainly because of her. People never learn!