This is something I've thought about for a while. I'm new to type design, so naturally I've had to figure a few things out through trial and error, including proper ascender height. I know, traditionally, that ascender height should be significant enough to aid legibility. But some fonts clearly have shorter ascenders than others, while still remaining fully legible. So my question is, how short can ascenders go, while still remaining legible?
Some examples of typefaces I come to think of with really short ascenders are Antique Olive, Ohno Type's Beastly and Dinamo's Ginto Nord.
Some examples of typefaces I come to think of with really short ascenders are Antique Olive, Ohno Type's Beastly and Dinamo's Ginto Nord.

I think ascender height is special in a way, compared to cap height and descender height. Obviously caps and descenders also can get too short, but I feel like ascender height is more delicate in a way, looking at the many typefaces out there.
My first post here, so I hope this leads to some interesting thoughts and ideas.