I have severe ADHD, I remember enough to remember how it is. maybe it's because I'm in my 20s.. at least the feeling/vibe and knowing how "it's for your own good!!!!" type of stuff actually sounds like
but still, imo I haven't changed that much. less risk taking, more worries, more wisdom (somewhat)
maybe for some people they really are super different when they're younger but for me it's been kind of a linear path after a certain point
+ don't quote me on this but from what I know, ADHD affects mostly short term and working memory, but long term memory, especially significant events/etc. can be quite well retained, which matches my experience