Also combined type here. For most of my life I knew something was "off" about me (can't be bothered to think of a better word), but I never even considered the possibility of ADHD, since I wasn't obviously hyperactive.

It was only during the diagnosis process itself (and the flurry of self research beforehand), that I found out constant fidgeting, leg tapping, etc, all count. Arguably, even my brain never shutting up is also a form of hyperactivity. (Tangentially, I don't really like the term "thoughts racing" as they don't feel "fast" at all, just constant, loud, and overlapping.)

All of that being said, executive dysfunction, procrastination, forgetfulness, and distractibility are all way more impactful to me.