I am a child of the 80s, and I have to say that there aren’t a lot of your “prototypical” moms in any of the classic 80s shows.
For example, Clair Huxtable played second fiddle to Bill on the Cosby Show. Judith Light was the same to Tony Danza on “who’s the boss?” There were a lot of shows that didn’t even have a mom character, like “my two dads,” “different strokes,” and “full house.” It seems like the butler or housekeeper was the more prominent figure in that era (Benson, Mr Belvedere, Tony Micelli, etc).