"The show has received mixed reviews. Some have praised the animation and creativity, but has been criticized for its often physical humor. Joly Herman of Common Sense Media posted a review of Coconut Fred's Fruit Salad Island on Go.com. The review describes the show as "the TV equivalent of sugary cereal, and nothing more", and proceeded to give the show two stars out of five.[2]
Rob Paulsen, who voiced the main character Coconut Fred, even stated that he regretted doing the show, and said that it was nothing more than a shameless SpongeBob SquarePants knockoff."
https://en.wikipedia.org/wiki/Coconut_Fred's_Fruit_Salad_Island#Reviews
"CommonSenseMedia gave the show a rating of 3 stars out of 5. It wrote "The character of Tut is amusing, with his combination of childishness and egotism, and his interaction with Cleo and Luxor can be quite funny. The resolutions of the stories are fairly predictable -- Tut uses his powers for good to help his friends, and harmony is restored -- but the situation is unusual enough to keep the show fresh."[3] DVD Verdict said "To be fair, as a product of the Discovery Channel, the producers have tried something slightly different with Tutenstein. It's educational children's programming, the attempt of an educational station to compete with more popular stations. Each episode incorporates some educational tidbits: explaining aspects of ancient Egyptian mythology and history. Unfortunately, the learning gets a bit mixed up with all the other nonsense."[4] The Sydney Morning Herald wrote "It's The Mummy for kids...There's no Brendan Fraser or Rachel Weisz here, but the humorous dialogue - and the inclusion of a talking cat - should be a winner among younger viewers."
https://en.wikipedia.org/wiki/Tutenstein#Critical_reception
I'm not seeing any consensus here that these shows are even seen as contenders as one of the world's most celebrated animated programs. Personally I'd never even heard of them. I only saw them because they were part of this "special class" category, and so I checked them out.