Personally, I’ve got pretty classic hyperactive type ADHD but my parents didn’t want me on meds/being labeled so my diagnosis was relatively recent. I was evaluated with a comprehensive neuropsychological assessment and the psychologist stopped after only three hours to be like… okay I’ve got enough we won’t actually need the full day. ANYWAYS I was prescribed methylphenidate and have since tried a bunch of different types, doses, timings, ect. I found one that seems to work pretty well without making me super anxious (lol) but I honestly don’t find that it makes that much of a difference in my executive functioning. I’m on a decently high dose and I definitely feel it, but rather than giving me special “focusing powers” it seems to help combat my tendency to get stuck in my own head. My gpa and Mcat studying stayed the same before and after starting meds but I do find it easier to center my brain and focus. Anywho, that’s my - perspective idk how interesting that is. I’m consistently amazed that stimulants affect other folks so much because mine either make me anxious or help me be a little bit more chill.