Not sure I understand your question but according to this https://econtent.hogrefe.com/doi/10.1024/2674-0052/a000028 only 0.79% of the whole UCI athletes have Therapeutic Use Exemption (TUE) for something. If if all these TUE would be for ADHD that would still be a lot less than the 8-ish % of the population with ADHD... Nevertheless not all cases of ADHD are diagnosed and even less are treated with drugs depending on which country you live in. The chart below shows the daily dose of ADHD drugs per inhabitants as a function of the BNP per inhabitants. It's in Swedish but you can see that USA, Canada and Sweden top the chart for how much drugs get prescribed for ADHD, while France, Germany, Irland and Great Britain are at the bottomAnyone know what score with ADHD meds in UCI competition is?
Statically Ronan Dunne is also unlikely to be treated for ADHD with amfetamins