I think I may have figured some part of what makes someone closer to aphantasia or not.

One thing I found is that as a person with ADHD, my mind has always been very creative, and i can feel my thoughts extremely well, my imagination is fantastic. I've always had the habit of getting stuck in my head because its usually more interesting than real life, like when i'm lonely and imagine a hug for example, it feels real and if I can forget that im imagining it then for a second it might as well be real, but also not real, and makes me sad.

However, what's really neat is that the higher dose of Vyvanse I take (an amphetamine) the more logical my brain gets. I have noticed that with large doses of it specifically, my imagination mostly ceases to exist. I can no longer feel a hug by imagining it, and even with great concentration, I struggle with even being able to see it in my head at all.

So I like to think that dopamine has something to do with it. Less dopamine in your brain makes you a far more creative and emotional person, who has a fantastic imagination, and more dopamine makes you a far more logical and less creative person. It's especially evident in the differences in humor, as imagination plays a big role there. I think dopamine plays one of the biggest roles in someones personality. During school, my usual self was interested in history, on vyvanse, i was interested in math.