#1 Rebuilt herself - Becky Lynch

Becky Lynch was deemed the most underwhelming performer out of the 4 Horsewomen, given the booking she received till SummerSlam 2018. The Irish Lass Kicker hardly got any singles match on pay-per-views, and played the role of Charlotte's sidekick on SD Live.
However, she turned heel on her best friend at SummerSlam 2018, and that move totally changed her career. She became extremely popular with the WWE Universe, and despite being the heel, was cheered over the face, Charlotte Flair.
She successfully captured the SD Live Women's title from The Nature Girl, and is now set to face The Baddest Woman On The Planet in a "Champion vs Champion" match at WWE Survivor Series.
Becky won a grueling last woman standing match versus Charlotte at Evolution, and may very well become the first WWE Superstar to defeat Ronda Rousey.