So I think that you could categorize AonDor, Forgery, and ChayShan as Devotion-based since you have to devoted to these Investitures to use them. For example, in AonDor your intent and precision is important, more important than they are in other forms of Investiture. Your intention and precision are both aspects of devotion. You have to be devoted to Aons you draw to fulfill the intention requirement and you have to be devoted to be accurate in your drawings to fulfill the precision requirement.
For ChayShan, you have to be focused on the martial art, or in other words devoted to the martial art and the actions you are performing.
Forgery might be more of a mix of Devotion and Dominion. You have to be devoted to creating accurate stamps that reflect accurate and plausible histories whereas when you actually stamp the object you are trying to Forge, the new history is dominating the soul's true history by overriding it.