We still mostly use Leibniz' dy/dx notation. Newton's fluxions and y-dot (a dot over the y) notation are largely forgotten.
The Hooke debate gave us a great quote from Newton. "If I have seen farther than others, it is because I stood on the shoulders of giants." (Hooke was a dwarf...)
~20 years ago in school, I encountered dy/dx and y-dot with about equal frequency (and maybe y' & f'(x)) in engineering and calculus courses. Engineering favored the dots.
I went though most of a pure math degree along side my CS degree and I don't think I ever saw ẏ used, mathematics as far as I know basically completely adopted the Leibniz notation.
Same here, and also agree with the "prime" notation, i.e., y'! One of my instructors had joked that the dot/prime notations saved printing costs in the days when printing was expensive - not sure if there is any truth to that.
The Hooke debate gave us a great quote from Newton. "If I have seen farther than others, it is because I stood on the shoulders of giants." (Hooke was a dwarf...)