I suspected you meant historically :-) Thanks for running the numbers, we've all learned something. Carry on :-)

No, it certainly isn't all, nor even most :-) In Europe, Spain is the only country still following male-preference.

In countries which practice male-preference primogeniture.

Unmentionables!

They neglect to mention that it was excavated from a skeleton's rectal area

*kisses back*

The peoples we term ancient Greeks were obsessed with nudity, especially the male form, but there is a difference between artistic ideal and behavior. Nudity in life was generally taboo, but may have been used as a kind of ritual costume in special circumstances (based on artistic and linguistic evidence). That said, a blacksmith who practiced his trade with a bare upper body wouldn't be in business long ;-) Genuinely curious here, could you please post links if you have come across archaeological evidence that the Greeks spent their days in the buff?
My sources:
Bonfante, Larissa. 1989. “Nudity as a Costume in Classical Art.” American Journal of Archaeology, vol. 93, no. 4, Archaeological Institute of America, pp. 543–70, https://doi.org/10.2307/505328.
Hurwit, Jeffrey. 2007. "The problem with Dexileos: Heroic and other nudities in Greek art." American Journal of Archaeology. 111. 35-60.

We also accept pounds of flesh