Shamefully, the last entry regarding bicuits was 2013!
My parents were poor cooks and way too busy with we 3 fools but their drop biscuits, only on Sundays, were a TREAT!
The following link is the best short discussion on the science behind many biscuit types in general and includes links to 5 varieties. My BEST biscuit memory was at the Grand Floridian, DisneyWorld.
For Canucks it is 'tax season' (at least for us financial planners

) so this Sunday will be some biscuit treat. Now, it's off to the office...!!
https://www.washingtonpost.com/graphics/2019/voraciously/biscuits/