I'm still working out how the Recents list works. They are a bit confusing when switching between groups. But since posting this discussion I've figured out more about what the top part of the list is doing. I think it best I start over in a new post when I've come to some final conclusions.

The rest of the list does show correctly people I have viewed but there are some funny things going with how it handles people in my shared group. I'll also post more when I've got a better handle on that.