Good to hear that he loves reading. That's typically one of my concerns for dyslexics stealth and classical alike--that their early aversive experiences with reading turn them off from the joys of reading. His reading comprehension, however, really is well below his cognitive peers. Even at the new, lower VCI, one would expect reading comprehension at least a grade or two above his age peers. (For example, the only one of my children--none of them likely PG--who was reading just above grade level (vs four to five grade levels above) at this age is the one who is putatively (not formally diagnosed by anyone other than myself) a little dyslexic and more dysgraphic, with a very similar reading/spelling profile to your DC.) And your DC's taste in reading, though very age-appropriate, is not necessarily exposing him to the higher-level language that contributes most to the verbal cognitive assessments. So your anecdotal reports are consistent with stealth/compensated dyslexia. (And FWIW, ICD-10, which is still the standard used not only internationally, but by the feds/Medicare, retains the criteria preferred by the dyslexia research community, which is not dependent on average-for-age.)
Those supplementals will get you the VECI, EFI, and QRI, which should be enough for your purposes.
Remember that ADHD's contribution to lowered reading comprehension requires slightly different strategies than dyslexia's. Be sure to look for both types of recommendations in your follow-up sessions with the evaluator.
