> was the only known person to survive a fall from the top of a cumulonimbus thunderstorm cloud.
Perhaps that's technically correct but Ewa Wiśnierska rose from ground level to 10km to the top of a cumulonimbus thunderstorm and came down 4 hours later 60km away. It's an amazing story.
https://en.wikipedia.org/wiki/William_Rankin
https://www.damninteresting.com/rider-on-the-storm/