@Sebastian Olsson i've tried that but it gives me all list articles regardless of what section the articles are in. Is there a way to set the section to the publication that is set??
@Jarret i managed to work this by cloning the section structure in the second publication, only then set_publication trick worked. Maybe there is a easier and more logical solution, but that worked for me. I have example.site and m.example.site as two different publications, with different themes, both using articles from example.site.