mucha lucha actually originated on kids wb, but i could see it as a nicktoon. i'm not sure why they labeled spongebob as that, but it could be because nicktoons was a 90s term, and that the show was from 1999. then again there's the nicktoons channel, which i've barely had that used to air just about every cartoon on nick, especially shows that were past the 2000 mark

It's pretty wrong for them to air non-animated shows like Supah Ninjas and Power Rangers: Megeforce on the Nicktoons Network.