Highly subjective (which is why I am curious), but I know zero people in real life that have an actual ADHD diagnosis, but two that were pretty much convinced to have ADHD and when trying to establish it for real learned that they actually have a different kind of neurodivergency/mental disease.
I think both of those cases were caused by a pretty large set of ADHD and other things are not as specific as they appear to a non-professional and also some conditions can make you more sensitive to noticing specific "symptoms".
For anyone reading this: Please don't read this as "you don't have it", but also if you think please try to confirm it via a trained professional, because the result could make your life quite a bit better, whether you are diagnosed ADHD or anything else.
I don't believe I have ADHD, but I've come to realize my brain is wired 'differently'.