I've heard of the show (long after it was a thing) but I never saw it.
Battletoads the game came first, and it was
no secret that it was indeed a TMNT ripoff. The franchise was a goldmine so naturally imitators were drawn. As I understand things, the Battletoads show didn't go forward because it didn't have nearly the quality that was in the game.
Besides the game, I read comic books featuring:
Pre-Teen Dirty Gene Kung Fu Kangaroos
Geriatric Jiu-jitsu Gerbils
Adolescent Radioactive Black Belt Hamsters
Cold-Blooded Chameleon Commandos
Most of those were not serious.
I'm pretty sure Street Sharks and Biker Mice from Mars were also directly "inspired" by the turtles, but I never watched them.