Just to clarify, there are very few "Santa's" (since St. Nicholas and Papa Noel were removed). Some of the counties, (Japan, China and Morocco) don't celebrate Christmas but tell stories of their Holiday traditions.
The only Santa like tellers are Father Christmas in the UK and Pierre Noel in France. Of course Santa and Mrs. Claus are in the American Adventure pavilion.
Mexico and Italy focus more on the religious side of the holiday, while Canada, Norway and Germany focus more on traditions and celebrations of Christmas in their Country.