Influencing a youth intake/newgen creation

I know, when the game gives you your youth intake, there are factors that can influence the nationality of players such as staff nationalities or affiliation types.

What I would like to know is, is something like this possible in the editor. 

If a region had a strong community of a different nationality, could anything be done in the editor to replicate this? Take somewhere like Quebec, they will generate a large number of French-Canadians (French-Canadiens). Is this where the language of a region comes into play?

I used a method recommended to me by kingrobbo to give a second nationality and it worked pretty well.

Check here

https://sortitoutsi.net/comments/get/626254

Was that just moving the region, or did setting languages help too?