This past week's Parade magazine had the crown prince and princess of Denmark on the cover, both very dark-haired.
When I worked in Sweden decades ago I supervised a group of Swedes, three men and a woman. The only blond was one of the men. And almost every where I went, the blonds were in a minority.
Another stereotype was the "dour Swede". I didn't see many of those. Most people were open and friendly. Sure they had down days, or times they were angry, but by and large they were quite ready to laugh. Few ate lutefisk but most loved crayfish in August. How many people who call themselves Swedish in America eat crayfish?