My rankings:
1. Serena/Graf- I go back on forth on the two.
3. Court- although I thought of putting her #1, particularly factoring her doubles, but I know that would case an eruption here.
4. Navratilova- I thought of putting Evert over her but gave Navratilova the edge mainly just for her doubles.
5. Evert
6. Billie Jean King
7. Venus- Have her over Seles and Henin mainly for her doubles. That plus her 9-1 head to head with Seles in singles, 5 Wimbledons to Seles's 0, and when you add in her doubles and Olympic achievements, it is hard to not put her over Seles, despite that Seles had the overall better singles career still.
8. Seles
9. Henin
10. Bueno- I think she is clearly better than Goolagong. 3 or 4 years considered the #1. 7 titles at the 2 most important tournaments then to only 2 for Goolagong. I think some will wind up ranking Goolagong over Bueno which is crazy.
11. Hingis- Considering 4 of Goolagong's slams were Australian Opens, and all Hingis's time at #1, I think her singles career is even clearly superior to Goolagong's, and with doubles she easily ranks ahead. Goolagong wouldn't achieve what Hingis did in any era. I thought of putting Hingis over Bueno, but decided against it.
12. Goolagong- Very talented, beautiful to watch, but lacked either the firepower, consistency or mental strength to ever be even a semi dominant player. At best she would be an interim biggest rival to the dominant player like she was for 2 years or so for Evert when Court/King were super old/retired and before Navratilova got stronger. Evert herself said she was kind of an inferior version of Mandlikova, even though due to her record she is greater than Hana, but tennis wise that was her view. As noted above 4 of her 7 singles slams were Australian Opens which was a nothing slam back then. If Court is docked for that, Goolagong who was never a dominant player like Court certainly has to be. Worst of all though only 2 weeks at #1, which pales compared to some women I still have behind her.
13. Sharapova- Honestly objectively she should probably be over Evonne, but I love Evonne and hate Maria, so this might be my one ranking where some bias comes into play. Evonne did have some success in doubles too though, unlike Maria, and since I have been consistent factoring in doubles, that is another factor, when the singles are still fairly close. Still with her Career Slam and 5 legit slams, and some time at #1 (never sustained) she probably had a better singles career than Evonne.
14. Davenport- Thought of putting her both behind Clijlsters, above Sharapova, and also above Goolagong due to her 4 YE#1s which are impressive, even if atleast 2 of them are kind of joke-ish subjectively speaking. Only 3 singles majors though. Really thought of putting her over Maria due to her doubles, but honestly her doubles career while good is nowhere near dominant like some of these others, so that still wasn't enough, nor all her time at #1. If she won 1 more major would probably rise her to #12, or maybe even #11 considering how much she owned Hingis head to head wise, but it is what it is.
15. Clijsters- Thought of putting her higher, but honestly despite having 1 more major than Davenport, a legacy at the US Open, one of the most impressive comebacks from retirement, and unlike a Maria some good doubles, it isn't enough to put her higher.
Honorable mentions- Sanchez Vicario, Mandlikova, Osaka, Barty
Sanchez Vicario- Her career IMO is tainted even more by the Seles stabbing than Graf. And I just don't think playing level wise she is good enough. Overachieved to win 4 slams. And was never even a semi dominant player really, not even in her best year ever in 1994 where she probably deserved the YE#1 instead of Graf.
Mandlikova- Just didn't achieve enough either. 4 majors, and a lot of other very good performances in majors she didn't win, but inconsistent on regular tour and for periods in slams where she also posted some stretches of awful showings, and 2 of those were Australian Opens when it was still not a fully legit slam. Even the 2nd she beat Navratilova to win it, both Evert and Graf (2 major contenders, who both would have had huge chances to beat her) didn't even play, and not due to injuries, but the general status of this slam at the time. IMO an even more talented and much more powerful version of Goolagong, while like Goolagong being incredibly athletic, fluid, versatile, amazing touch, beautiful to watch, but alas results are results.
Osaka- Didn't achieve enough except those 4 slams.
Barty- Didn't achieve enough despite her 3 slams, and time at #1, some of those in the weird Covid time. She is probably the one I thought of putting most due to her time at #1 but still not enough looking at the people who did make the list.