Kratom is stimulating but not as much of a harsh stimulation IMO. A close friend of mine has ADHD, and he has repeatedly expressed how grateful he is that I introduced him to kratom. He gets a lot of side effects from Vivance (and the others) that kratom helps smooth out.
I am not sure if I truly have a mild form of ADHD or if I just share some of the symptoms, but I generally find it easier to concentrate when I have some kratom in my system. All of my close friends are neurodivergent, and I suspect there's a reason why.