Who are notable collaborators in Brandon SODERBERG's projects focused on spreading acts of kindness?

I am not closely connected with Brandon Soderberg’s specific projects, so I do not have an accurate list of his notable collaborators in work related to acts of kindness. I do not want to guess and misrepresent his network or projects.

Could you share a bit more context (for example, a specific book, film, or campaign of his) so I can narrow this down and help more accurately?