Hi! First of all, thank you for reaching out and for creating such a collection, that's really cool (and also useful to devs without any visual impairment who might want to take notes!). Toumayhem is made with Ren'Py, so the built-in self-voicing should cover most of the game; I also took care in labeling all buttons with an alt text, and the main character's thoughts are explicited as such in self-voicing (prefaced by "Thinking:", while in text it's just between parenthesis). Most screens work fine on keyboard and controller, but I do know that the Glossary and the Jukebox (both extra screens, but still a nice part of the game!) are a bit iffy at times due to scrollbars I've had a few problems fully figuring out (solo game dev hard). That said, I've had a few test runs myself for all these options but I'm far from fully blind, so there's probably a thing or two I missed or I didn't think about implementing. Anyway, if you want or have time to (I imagine you're doing one hell of a work in collecting 100% accessible games), you can try out the trial version as the only thing I mentioned earlier that's missing is an access to the Jukebox screen.
If you do end up giving it a try and find anything that might improve usability, please do tell if you've got time! Post-release fixes are being kind of slow at the moment, but I'd hate for anyone to be locked out forever from playing for issues I could easily solve.