We have a team or two here as well, and my country is not on your list.
Thing is though that it is indeed like olympic quidditch, which also shouldn't be a thing (Edit: On second thought Quidditch might actually really have a more prominent genuine international following than Anerican football, given HP's wide reach).
An olympic sport really needs a decent reach, especially one that surpasses diplomatic, cultural and political boundaries.
All countries you mention are firmly part of "the west" (or in the west's orbit, like Mexico), while a relatively minor sport like ice speed skating is also played beyond in countries like China and Russia.
Which is part of why it is an olympic sport, and american football is not.
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Mooie naam.