Different immigration patterns

What if there were different immigration patterns from 1850 to 1950 for the following countries:

More Italians in Australia or in Brazil or in Mexico.
More Irish in Argentina or in New Zealand.
More Germans in Argentina or in Brazil.
More Spanish in the United States or in Mexico.
More Polish in Brazil or in Mexico.
More Scandinavians in Australia or in New Zealand.
More Russians in the United States or in Australia.
More Chinese in the United States or in Australia.
More Lebanese in Argentina or in Brazil.
More Indians in Australia or in the United States.
More French in Argentina or in Canada.
More Japanese in the United States or in Brazil.

What would have been the cultural, economic, and political long-term effects to Argentina, Australia, Brazil, Canada, New Zealand, and the United States if they received different immigrant groups than in OTL?
 
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