Might not be what you're looking for but might help as well. A couple of resources from Sonia Foss...academic who wrote about this topic. https://www.amazon.com/Inviting-Understanding-Portrait-Invitational-Rhetoric/dp/153813103X
Beyond Persuasion, A proposal for an invitational rhetoric, Sonia Foss (Link is to pdf of article on her website).
There's more if you start digging around, but Foss' work is important in this area. Look to others who have cited her work. There may be some folks from the interpersonal/group side of the field who have used her work on invitation.