JeremyCreek wrote: The Doug characters are owned by Disney, so Nickelodeon couldn't reboot that series even if they wanted to. And technically, there is a revival coming for Rugrats, in the form of the new comic book.
And for that matter, I don't think this particular show would work out these days. It might be a classic and the first Nicktoon, but it's not really a fan favorite or has people demanding to see it again.
Of course if you mean the Rugrats comic books, I don't consider that an actual reboot since the show was originally in animation, its a downgrade to read about babies having everyday over exaggerated adventures.
Danny Phantom has nothing confirmed about any reboot.