Batman: TAS
X-men (first few seasons anyway)
Exosquad
Gargoyles
Pirates of Dark Water
Superman: TAS
Rocko's Modern Life
David the Gnome
Fuck you, younger generation! 
This post is simply The Truth.
It's amazing how much BETTER 90's cartoons were than the current crop of shows. You listed many of the more mature cartoons, but we also had light hearted classics such as
-RECESS
-Doug
-Animaniacs
-Arthur (PBS represent!)
Every Saturday was an event for me. Many times I'd wake up as early as possible and then sneak downstairs; it would be so early that Golden Girls and Star Trek TNG would be on, and I'd still watch them. Eventually the cartoon block would start with more obscure stuff like Sailor Moon and this awesome Sonic cartoon that was considerably darker than the more popular Sonic and Tails show. I remember Garfield would also come on around this time. Then FINALLY the stuff I really wanted to see would start. The Batmans, Supermans, etc. Around this time the Pokemon show would be on too, which I thought was amazing at the time.
Remember Goosebumbs? That would come on in the early afternoon once the cartoons were basically off. Aww man. Then around 3pm I'd turn to UPN to watch Outer Limits, which was omg amazing to me. I'd end my TV binge by watching Hercules and Xena Warrior Princess.
OMG THE MEMORIES
Anyone else remember this shit?
