There was a old type of biscuit in Maryland that was not leavened with chemicals but aerated by beating. Kneading would make them too tough of course. I don't understand the technique exactly and someday I'd like to try making a batch, although it would be better to find a place I can try a real one first if that still exists.

https://atasteofhistorywithjoycewhite.blogspot.com/2015/03/m...

https://libapps.salisbury.edu/nabb-online/exhibits/show/baki...