I have a story to relate about typing on the old manual typewriters. My dad in the 1930s went to the state typing championship with about 75 girls. He won. He could type on those old manuals like lightning. In WWII he was snagged by the Adjutant General’s Corp and prepared Courts Martial document for a good part of the European Theater in forward HQ. He rose all the way to Master Sgt and the Army wanted him to take a WO rank and go to law school on their at wars end.
In his 80s he could still type faster on a manual than most typists could on an electric. He did love his IBM Executive and kept one functional long after they were off the market — erasable ribbon and all.
I had an IBM Selectric that I bought at auction. God those things were heavy! I was never more than competent at typing but it has proved useful over the years.