@popey your experience sounds similar to me. Except with Red Hat health care I was able to see someone in two months and a prescriber in a month.
As you get older, ADHD gets worse. I have dual Autism and ADHD inattentive.
Atomoxetine is a non-stimulant. Lisdexamfetamine is a stimulant. Surprised they also did not suggest Adderall XR. I tried 3 stimulants; then tried Atomoxetine and it seems to work well for me so far. Still learning myself.