I actually do have a habit of brushing my teeth. It's part of my morning routine, which I do in the exact same order, every day. But, I'm autistic (I was diagnosed as a teen in the 80s). I'm one of those persons that has a very exact routine, and get really upset when my routine gets interrupted.
But, I do agree with you that some of those symptoms seem more indicative of depression than ADHD.
Minnesotan here. No incest signs. Lots of drunk driving signs. And, the occasional meth signs down in the SW of the state.