“Contrary to popular belief, the core problem in dyslexia is not reversing letters (although it can be an indicator),”

I always assumed the visual processing limitations were part of the issue with the reversal/transcription problem. A sort of neurological sequencing disorder swapping out the correct visual sense with a mistake. Xerox style. One that the dyslexic font wouldn't help with.

If that's apparently not dyslexia, or part of their spectrum, what is it if it is a processing disorder that remains into adulthood?

They come across rather dismissively when their own links, as far as I clicked at least, were less firm. I do appreciate that visual aids hawked to parents are not going to help for this issue either. I would like a name for the thing which is so importantly not Dislexia.