They are not on the list for a reason. That is what makes it a micronation. There is a difference between a microstate and a micronation. Vatican City is a microstate, not a micronation. It is a difference many people often get confused if they are not educated on the subject. That may be a good reason to create a microstate page as well. A list of micronations that are verified or important can be found on the project page. Places like the Principality of Hutt River can be considered important or historical to its location (Australia). After all, it was at one time a significant tourist attraction. One may deem this important, historical or significant!