First of all, the landlord needs to understand that PCT is an international patent application, which is based on the PCT international treaty. There is no patent type in PCT international application, but PCT international application cannot form a patent right in the international arena.
Secondly, the types of patents can be specified in the process of PCT international application entering the States parties to the PCT treaty. However, there are only inventions in the United States, so when PCT enters the United States, it can only be designated as a patent type in which PCT enters the national phase of the United States. As for the question of whether the utility model can enter the United States, I think it should be the one I mentioned above.
Thirdly, the article found by the landlord explains the function of "temporary application" in the United States, which is also an invention. The article only analyzes from another angle that the American provisional application is equivalent to the utility model of other countries in some specific aspects, which does not mean that the United States has a utility model system.
So the conclusion is that the landlord's PCT international application can enter the United States, but the specified entry type is an invention.