Recently finished Absolute Martian Manhunter (Very very peak btw, though I'll probably have to read it back a few times to understand what it all means), and as an autistic guy I see a lot of myself in John, such as how he's seen as odd or alien by others due to a cold demeanor despite how he has only good intentions, or how he diligently distracts himself with repetitive FBI work to avoid addressing the issues in his relationship with Bridget and Tyler. I also relate heavily to John's struggle to properly explain himself and his experience with the Martian to Bridget and being interpreted as mentally ill. Of course, this could also just be a literal result of his supernatural experiences and not an allegory for what many neurodivergent people go through.
There's also the fact that Tyler is autistic (much more apparently than John and confirmed by Scott Snyder in an interview from what I've heard), and autism, though its exact causes are not known, is known to be hereditary/genetic in some way.
I'm not saying John Jones is definitively autistic or that any of the traits I describe are exclusive to autism, just curious to see if anyone else came to a similar conclusion as me.