If anybody knows of something similar I’m happy to be pointed as well. Searching “keyboard accessible keyboard” is understandably nonsense.

Yes! I am an assistive technology specialist - helping people with all kinds of disabilities access computers - and I have a laundry list of little challenges I haven’t found the right tool for.

An example to start is needing something kind of like the windows on screen keyboard but that selects letters/keys using arrows and space/enter (a lot like typing using a remote).

The osk has some special feature to not steal focus from where you’re typing, but this could instead let you do all your typing and then when you select done run a sendkeys to type in the text (could have clipboard option but this doesn’t work everywhere). This also makes correcting errors easier. Bonus if it works with text prediction same as the osk :)