For pure nostalgia, the answer would be Franklin.

For the wacky antics it'd definitely be a tie between Ed Edd n' Eddy and Codename Kids Next Door. What other shows can you get a cursed telephone that causes suffering and an elevator made of junk that leads to the moon for EEnE? Or for KND have a whole zoo filled with kids as the exhibits so childless parents can throw peanuts at them while also having an episode where a man who looks like a baby use his cigar to connect to a global satellite web to try and turn everyone else into babies?

Inspector Gadget

What happened to Tazmanian Devil?

South east Asia:

Voltes V

Mazinger Z

Daimos

Macross

Transformers

Thunder cats

Mask

Dino riders

Samurai Pizza Cats. My grandma would have tapes of it so whenever I went over to my grandma's house, chances are this show would be playing at some point haha. The episode I remember the most is the one with the dragon.

Alfred Jodocus Kwak

It's a Dutch show that was beautifully drawn and animated in Japan. It still looks fantastic and it takes you seriously as the material is quite mature. It's about ww2, sort of like deep space 9. There's a lot of world exploration and adventure and it adresses societal issues. The only bummer is that the gender norms are quite old fashioned so it might not be appropriate for your kids based on your views.

Johnny Bravo

My all time favorite was Robotech, though it has not aged well.
I also went through a lot of Disney in my youth:

• Gummi Bears
• Duck tales
• Darkwing Duck

And then there was the smattering of others:

• Dungeons and Dragons
• Thundercats

I have a soft spot for Hey Arnold! and Rugrats... If I had to pick one from another but Nick that would be Courage The Cowardly Dog.

This shouldn't be the answer because it's not really for kids. But it is, and will always be, The Simpsons.

Every evening at 6pm on UPN I would watch the Simpsons with my dad. I went from watching and understanding Bart to now watching with my daughter and seeing it through Homer's eyes.

Gargoyles, Batman The Animated Series, X-Men, Exosquad, Animaniacs, Pinky and the Brain. Liked them equally.

Pinky and the Brain.

Although now as a middle aged man, Bluey.

The Tick.

I really enjoyed the comic book hero shows, and The Tick and Freakazoid were great fun to watch as parodies of the genre.

I was so happy to see The Tick get a couple of seasons as an Amazon show.

Blues clues

Not my favourite but I'm throwing this out tbere.

Gargoyles

See username

Rugrats Marsupilami Spider-Man Gargoyles

Not tv cartoons, but cartoons either way: Mortadelo y Filemón Astérix

Wtf no one said TOM&JERRY??

Jem and the Holograms
Danger Mouse
The Smurfs
The Snorks
The Jetsons
David the Gnome
Marsupilami

Static Shock, Kim Possible, Darkwing Duck

Dexter's Laboratory, Cow and Chicken, Power Puff Girls

Speed Racer

Ed, Edd, and Eddie

Courage the Cowardly Dog

Reboot

It may not be the answer I gave at the time, but it's the best balance now of "liked it as a kid" and "like it as an adult"

Avatar The Last Airbender. I’m in my early 30s and do a rewatch almost every year.

People have already mentioned SpongeBob, so I will go with Freakazoid and The Tick.

90 minutes of Looney Tunes.

Invader zim

Goof Troop

TaleSpin

SpongeBob

Justice League and Justice League Unlimited

Basically any fantasy cartoon that featured a voyage or some kind of quest was a favorite when I was little.

• The Adventures of Teddy Ruxpin
• Dungeons & Dragons
• Pirates of Dark Water
• Conan the Adventurer

Then or now?

5 year old me: She-Ra

10 year old me: maybe Bugs Bunny honestly

Adult me: Bluey hands down forever. And my kids like it too.

SpongeBob. The early seasons were and still are god-tier

Arabian Nights. The adventures, Jeenie, Magic carpet, Abu, and everything was awesome.