Also here, if one would like to avoid Google somewhat https://www.fontsquirrel.com/fonts/atkinson-hyperlegible

GitHub link: https://github.com/ThomasJockin/readexpro

That is not a link to this font, unless Readex Pro is a rebranded Atkinson Hyperlegible. :) (From the Readme file, I'm pretty sure it isn't.)

However: https://github.com/googlefonts/atkinson-hyperlegible

Oops you're right, Readex is the rename of Lexend. Sorry!

Thank you; couldn't get the download link to work.

The Braille Institute site makes the file available by http instead of https, which a lot of browsers will reject for security reasons.

I wonder which nation-state will exploit Windows font rendering and MITM the Braille Institute with a malicious payload. Iran, surely?