Rumours crew. Who is who?

[Villavic]

I found this picture of supposedly the Rumours recording crew.

I don’t find Christine but I think it’s the girl behind the boy touching the dog.
Is that dog, Ken’s dog (who appears in Tusk cover)?
Is Bob Welch the guy with hat, glasses holding the bottle?
I think Richard is the guy in dark sweater near Lindsey. Is Ken Caillat the guy behind Stevie?
Do you recognize more people there?