What consoles were on the market in 1981?

So I’m working on a researchy retro games piece and I was wondering if anyone here who was more of an expert on the time period could confirm/deny/add to a list I’m currently working on for it.

Basically I’m trying to make a comprehensive list of all the home consoles that would’ve either been on the market or gone onto the market in 1981. My focus is the North American market and I’m interested as much in what would’ve been common or likely to be purchased moreso than what just would’ve existed at the time. What I’ve assembled so far, through research, is…

Magnavox Odyssey^2
Mattel Intellivision
Fairchild Channel F
Bally Astrocade
Atari VCS
APF Imagination Machine

I feel like there’s something I’m forgetting, though…