Don't forget the Cotonou Agreement. While not all European leagues consider themselves bound by it, some leagues, including Spain and France, treat players from Cotonou Agreement nations as domestic players. That means players from most African nations, along with much of the Caribbean and Oceania, count as domestic players in Spain, France, and several other European nations. Many EU countries also have bilateral labor agreements with non-EU countries. For example, Spain has agreements with Russia and Turkey, Greece has agreements with several North African nations and non-EU Balkan nations, and so on. So Spain's low non-EU limit is highly deceptive, between the large number of countries that count as domestic and Spain's extremely liberal naturalization laws. * EU member nations, Cotonou Agreement signatories, Russia, and Turkey all count as domestic. * Anyone from a Spanish-speaking country can get Spanish citizenship after two years in Spain. * Anyone else can get Spanish citizenship after five years. Oh, and as for shooting down individual examples of players that supposedly show the trends: if literally every example that's been given turns out to be false or deceptive, which is exactly the case so far, then there's no trend!