#2 Ronda Rousey became first woman Superstar to win titles in WWE and UFC

Ronda Rousey made history at SummerSlam 2018 when she became the first female Superstar to win titles in WWE and UFC, when she defeated Alexa Bliss to win the RAW Women's title.
Rousey, who had signed with WWE in 2018 had a meteoric rise in the business, and just months after debuting at WrestleMania 34, in her fourth match in WWE, won the top women's title at SummerSlam.
She went on to hold the title till WrestleMania 35, where she suffered her first singles loss in WWE at the hands of Becky Lynch. The Man and Rousey had a heated rivalry, which later saw Charlotte Flair be added to the mix, and the trio headlined WrestleMania 35 - the first women to do so in WWE.
The status of Rousey's WWE future is currently not known as she hasn't been on WWE since her loss at WrestleMania.