Amazing! Isn't there also a single element one that uses an inverted cylinder with the type on the inside?

In general, I'm discovering what a deep rabbit hole I've dug myself into. Last weekend I was trying to decide between a Corona Silent, a similar-vintage Remington I haven't yet identified, and an SCM Corsair. Looking for a nice portable contrast to a Selectric that isn't fatiguing to use.

Edit: Re. that first point, believe I was thinking (somewhat backwards) of the 1878 version of the Malling-Hansen Writing Ball: https://www.officemuseum.com/typewriters_hansen_writing_ball...