Ooops!  Yep- my bad on the 
Stargate.
As for the rest, not only did I personally watch almost all of those shows on Fox (for at least one episode), here's a list (scroll down a bit):
List of programs broadcast by Fox - Wikipedia, the free encyclopedia
There are also some on that list that could have been classified Sci-Fi but were placed under another category, like 
Kindred, the Embraced and 
New Amsterdam.
I also forgot to mention 
Woops! which was a post-apocalyptic sitcom that was truly a disaster in and of itself...
Swamp Thing, 
Futurama, 
Big Guy and Rusty the Boy Robot, 
Astroboy, and the brilliant 
Adventures of Briscoe County, Jr.
And UPN did have its share of sci-fi too- like Jake 2.0 (sort of a n update of the $6M Man, and presaging Chuck), as did channels like TNT and USA...but not nearly as much as Fox.
Besides, none of those 3 are or were considered to be legitimate 
network TV compainies.