This one of Maria Tarasova deserves consideration:
I just realized one of my answers besides trying to pick from among a number of Penpraghai Tiangngok videos would be a paid video I bought through Angela Yeo's onlyfans. I couldn't really find anything in her public posts that does justice to it, but maybe imagine something like this:
https://www.girlswithmuscle.com/1542702/
...except nude, and more ripped, and clenching her glutes about as hard as it's possible to, to the point that if she was on her side you could pour a whole bowl's worth of cereal and milk into the glute indentations without spilling anything.
She has a number of videos on her OF that are candidates for this category, really.
I don't know about all time but this is my personal favorite. Wendy McMaster. Sorry, I don't know how to grab YouTube videos. https://www.youtube.com/watch?v=IuHqG51c4U8
This is my kind of thread!