I have no dog in this, but the sources I can find all say something like 25-30% non-verbal or minimally verbal. People seem to group them together, so I think '

I have no dog in this, but the sources I can find all say something like 25-30% non-verbal or minimally verbal. People seem to group them together, so I think 'minimally verbal' must be nearly as severe. https://pmc.ncbi.nlm.nih.gov/articles/PMC3869868/ https://pmc.ncbi.nlm.nih.gov/articles/PMC3869868/