I'm gonna go with Exo-Squad. Was on my regular rotation in my youth, and, surprisingly, still holds up. It's a little dated in some spots, but for a kids action cartoon in the 90's it covers a lot of heavy topics and doesn't shy away from them.
But there tons of others. Boy Meets World, Home Improvement, Star Trek: Deep Space Nine, Swat Katz, just to name a few.
And old school Saturday Morning cartoon lineups. For the record, the only way I can recite the preamble to the US Constitution is by singing it Schoolhouse Rock! style.