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The way babies cry may be influenced by the language of the parents

https://archive.is/CYLFm "Do Babies Cry in Different Languages?"

> Quantitative acoustic analysis of these recordings has produced further insights into the factors that shape a baby’s first sounds. Newborns whose mothers speak tonal languages, such as Mandarin, tend to produce more complex cry melodies. Swedish newborns, whose native language has what linguists call a “pitch accent,” produce more sing-songy cries.

It's not that far fetched to imagine that adults can vary in the way they cry for many reasons, and this variation be consistent across populations.