Glad you're back with an update, lulu!
Several factors can affect how his test scores have unfolded over time, not least of which is overall development and increased testability. On the whole, however, his current resutls are quite consistent with his past resutls, with strong verbal and fluid reasoning, and working memory (the major change), and high average visual spatial reasoning and visual-motor processing speed. The increase in his working memory scores could have something to do with medication, since that's mostly a test of short-term auditory memory, but it could also have to do with development and strategy use. I notice that his visual working memory must have increased as well, with performance probably somewhat impacted by development in motor skills to grossly within normal limits. (No fine motor is involved; it's purely pointing. I'm also curious if he was tested using an iPad on any round of WISC or WPPSI testing, as there are some differences in PSI performance depending on whether the examiner used paper or tablet for those measures.) Visual spatial thinking measures probably benefited from one of the tasks being motor-free (in contrast to the WPPSI). There is an option for a motor-free VSI, if the examiner has access to the WISC-V Integrated, which might have been an interesting comparison, given the huge gap between VS reasoning and motor coordination. (I.e., it is possible that his actual visual spatial reasoning is on par with his verbal reasoning, but is underestimated on formal testing because of interference from his weaknesses in motor coordination.)
In keeping with cautions emerging from his early testing, I see that dysgraphia did eventually warrant a diagnosis.
ADHD is typically diagnosed based on multiple instruments, and having some medicated and some unmedicated isn't necessarily a bad thing, as long as you know which ones are which, and depending a bit on which ones are unmedicated. The achievement testing is not usually a critical component of the ADHD diagnosis. That was probably more relevant for dysgraphia.
