The term "white outsiders" can refer to various groups depending on the context, such as immigration patterns, historical contexts, or specific regions. In the United States, for instance, the majority of white outsiders throughout much of the 19th and early 20th centuries were European immigrants, particularly those from countries like Germany, Ireland, Italy, and Britain.
If your question pertains to a specific group of outsiders in a particular historical context or region, please provide more details so I can offer a more accurate response.