(I was gonna reply to you with this, ace, but decided to put it in its own post instead ^^;)
I feel like each married couple is on opposite sides for MWF. So it’d be:
Pro-MWF = Mrs. McAdams, Mr. Von Chilstein, Mr. Ping, Andrews, McFeeneys, Treehugger’s parents, Jock’s parents.
Anti-MWF = Mr. McAdams, Mrs. Von Chilstein, Mrs. Ping, Goldsteins.
The Monoranians would be pro until Chaz’s life was put in danger and they switched over to the anti-MWF side to protect their son.
The Kwees try to stay out of it so their daughters can have a normal, successful life but are in actuality anti-MWF and choose that once forced to get involved.
Mr. Stern (Mrs. Stern having died) also tries to stay out of it and is initially pro-MWF for the money but eventually switches to anti-
Mrs. Martinez (since I feel like Cam’s in a single-parent household) actually has no knowledge of it since the family doesn’t have the money that the others do and she’s always working to support her family.
Mr. Holgaart is abroad a lot because of his business and doesn’t have the time to get involved with the local relations or properly talk to his son’s friend’s parents. Mrs. Holgaart is really kind but can’t speak English so she spends her days sewing/knitting as she watches her Scandinavian soaps.