The WWE Women's Division has changed drastically in the last decade by phasing out swimsuit and fitness models and replacing them with mostly independent wrestlers and MMA fighters thanks in large part to Triple H who wanted to make the WWE Women's Division very similar to Shimmer. But things were different for WWE's female talents before Triple H changed things.
Before the WWE Women's Evolution, WWE's female talents generally had either one of two characters: the prudish babyface Diva such as Kelly Kelly, Eve Torres, the Bella Twins, Gail Kim, Tiffany, Maria, Christy Hemme and Miss Jackie and the mean girl Diva such as Michelle McCool, Layla, Maryse, Candice Michelle, Melina, Alicia Fox and Carmella DeCesare while the likes of Trish Stratus, Lita, Victoria, Jillian Hall, Beth Phoenix, Natalya, A.J. Lee and Paige managed to break the mold. As such, women's matches in the WWE were often relegated to the cool-down spot after a top men's match and before the main event on shows such as RAW, SmackDown and the PPVs while some shows didn't even have a women's match on the show.
The seeds for the eventual WWE Women's Evolution were planted in the summer of 2012 when Triple H replaced John Laurinaitis as WWE's Head of Talent. Triple H, a huge fan of women's wrestling (particularly Shimmer and to a lesser extent, Shine and WSU) and women's martial arts (particularly Ronda Rousey of whom he is a huge fan), began to phase out many of the Divas and replace them with indie wrestlers and MMA fighters. He also hired former indie wrestler Sara Amato as a trainer. Amato would train the women the same as the men by teaching them to fight, kick, hit and blade and not pull hair or cat-fighting. In addition, Triple H gave each woman a unique character and personality.
As a result, the current WWE Women's Division now features women of all shapes, sizes and looks and is not cookie-cutter in terms of appearance. There's "The Man" herself, Becky Lynch, "The Queen" Charlotte Flair, the "Geisha Girl" Asuka, the deranged Alexa Bliss, the narcissistic Carmella, the "EST" Bianca Belair, the "Role Model" Bayley, the "Baddest Woman on the Planet" Ronda Rousey, the maniacal Shayna Blaszler, the punk-rock girl Shotzi, the tomboyish Liv Morgan, "The Eraducator" Rhea Ripley and many others which proves that fans are interested in seeing a more diverse WWE women's roster, not generic and bland models with no character whatsoever.