What Cartoon Network had in its millennial era would compete with prime '90s Nickelodeon and prime 90's Fox Kids for GOAT cartoon era, period.
And as a guy born in the mid 80s who grew up on Nickelodeon (Rugrats, Doug, Ahhh Real Monsters, Ren Stimpy, Rocko, etc) and Fox Kids (MMPR, X-Men, Spidey, Batman TAS -before it moved to WB-, etc)... cartoon network brought the HEAT that was just as impactful on me as a teenager as Nick/Fox were on me as a kid.
Shout out to 90's WB too, they had their share of bangers as well. Loved Tiny Toons