Here's an updated list of every Hot 100 No. 1 exclusively by multiple women soloists:
Title, Artists, Weeks at No. 1, Date Reached No. 1
"WAP," Cardi B feat. Megan Thee Stallion, one (to date), Aug. 22, 2020
"Rain on Me," Lady Gaga & Ariana Grande, one, June 6, 2020
"Savage," Megan Thee Stallion feat. Beyoncé, one, May 30, 2020
"Say So," Doja Cat feat. Nicki Minaj, one, May 16, 2020
"Fancy," Iggy Azalea feat. Charli XCX, seven, June 7, 2014
"S&M," Rihanna feat. Britney Spears, one week, April 30, 2011
"Lady Marmalade," Christina Aguilera, Lil' Kim, Mya & P!nk, five, June 2, 2001
"The Boy Is Mine," Brandy & Monica, 13, June 6, 1998
"No More Tears (Enough Is Enough)," Barbra Streisand & Donna Summer, two, Nov. 24, 1979