I'm a old fart.
Old enough to remember 'toons earlier than those.
I grew up as a kid during the late 70's & since I was such a huge comicbook nerd, I usually only watched cartoons that centered on on superheroes, sci-fi or action/adventure (Bugs Bunny being the rare exception).
I LOVED watching Space Ghost ( & his "cousin" show, Birdmaaaannnnnnn!) Where I lived, they would rerun SG along with other old 60's cartoons ( Frankenstien Jr., Young Samson etc.) during the afterschool 3-5 time slot.
Heculoids was probably my favorite though:
Later on, all those mostly Hanna-Barbera stuff was replaced with the Japanese imports like Voltron & my personal fave (at the time), Battle Of The Planets, a seriously edited-down version of Gatchaman.
Yep. I had a discussion with a friend of my brother-in-law at a party about these, and he assumed that I liked 'em ( as I kid I thought they okay, as a grown-up, they're terrible). So he copied a bunch of 'em onto a DVD along with some of those Bring On The Marvel Superheroes shorts ( even worse!) to pass along to me.
I watched 'em & went 'YEEARRGHHHH!!!"