I've been riding since I was three and to me a saddle was just a saddle (as long as it fitted the horse) until I read an article a few years ago which was a real eye opener.
Possibly today's top female equestrians are benefitting from saddles designed for women but Marion Mould (née Coakes) and all of the top women riders of my youth including the amazing Ann Moore and Princess Anne were competing on saddles designed for men and were still winning.
I think this says so much about how equestrian women just got on with it in one of the very few sports that they could compete in as equals to men, even though they were starting with a great disadvantage that they were probably completely unaware of.
https://holistichorse.com/health-care/saddle-fit-for-women/
https://www.womenandhorses.com/saddles-for-women.html
https://fitrightsaddlesolutions.com/female-saddles
https://schleese.com/why-schleese/