Yeah I've picked through both, I believe I have more elegantsims over sathya cause I was quite picky, but there's a handful of muscular women Sathya put out that's rounding out the muscle girl collection I have.
My entire process was going through the entire loverslab sims section twice. Then I went through the /tsg/ repository and sifted through the whole doc. Then went through kemono to try and find what I can find. Ultimately ending with spending like $40 across various patreon creators for stuff that I couldn't find for free. Not to mention using wayback machine and PMing certain creators with defunct google drives and such for copies of sims that are no longer widely available.
I can't say for sure, cause I know there's some really crazy people on the internet. But I believe I have one of the largest (curated) collection of custom sims from across the internet.
Granted, I've let my personal tastes dictate a lot of what I have vs haven't decided to download. But I think there's enough variety in my collection to have something for everyone. Plus, you can always add stuff on top if there's something specific you wanted to add