I really like your list, but I also want to point out that humans have way more variability than we realize. A sure fire solution for some will do nothing for others. It doesn't mean it's bad advice, just that context is everything when it comes to health, diet, and fitness for people.

A few other things I would suggest that might help some.

8. Cut down on caffeine. The whole point is that it's a stimulant. I have had many conversations with people where they complained about chronic insomnia but also drank six cups of coffee a day. Caffeine has a longer half life in the body than you expect. Drink less and drink it earlier in the day. Personally, I have only one cup of coffee in the morning, and that's it. If I have any caffeine in the afternoon, I'm up all night.

9. Journaling. If I'm awake with the same anxious thoughts going through my head, I find writing them down helps massively. It's like my brain understands that I don't have to worry about forgetting it in any more and lets it go.

10. Exercise. Doesn't have to be super vigorous, but just going for a walk helps. We are animals. Animals need to move. Gotta get the wiggles out.