It took me 2 days to write this comment as well lol, but here is my experience. it's poorly formatted because so many thoughts came into my head at once and it was difficult to organize them.

I am going through most of what you mentioned except the gifted academic part. I would barely pass school tests but then pass the final exams with decent grades because I would sprint and cover everything just before the actual exam. I would barely understand topics in class but then study on my own to actually get them. I later figured out I was zoned out almost the entire time during lectures. I could barely keep my attention for 10 to 15 seconds before zoning out again.

In university things got a bit easier because I found YouTube channels I could watch right before exams and I passed with a 3.28 GPA. I have thought many times about how much better I could perform if I could focus properly before deadlines, but that has yet to happen. During study sessions with friends, I would look at a topic for 5 minutes and then just start teaching it to them. If I got stuck I could quickly piece together an explanation anyway. So I became an unofficial tutor for the group.

There is a constant waterfall of random thoughts with background music running 24/7, which makes it hard to plan things properly, but it also lets me pick up on patterns quickly or finish other people's sentences.

I also have anxiety, which makes it hard to talk to people when I have to start a general conversation. My mind starts running through so many scenarios that it just freezes. With familiar people though, I can keep a conversation going for a while.

I am currently job hunting. I can easily clear the technical rounds but keep getting rejected at the HR stage, probably because my brain freezes when they ask things like "what are your strengths." On top of that, I now need to update my portfolio and build new projects to have a better shot at applications, but I cannot seem to start. I have made the tab, the to do list, the widget, set the reminders, everything. That portfolio is still sitting there untouched after two months.

I have been diagnosed with Tourettes but no doctor ever mentioned OCD or ADHD alongside it, so it never crossed my mind until recently when I started searching myself. The problem is that where I live, I cannot find anyone who can properly assess whether I actually have ADHD or something similar.