But then you would lose the usability of the 'canon type ' classification, no?

How so? I don't know what Argentinian historietas are and I'm not sure about Animé but Anime (the Japanese one) is definitely a different canon type than comics (also, not all comics are American). But you are right, a TV show from Argentina is no different canon type than a TV show from the USA, if by TV show you mean Live Action TV Series, which is what we usually mean when we say Television. I guess my point is the Animation & Sequential Art cat tries to be too many different things at the same time. If we need to have parent categories like Animation or Sequential Art, I would imagine a Fandom by Canon Type category to look something like this:

Category:Animation
.....Category:Anime
.....Category:Cartoons
Category:Books & Literature
Category:Sequential Art
.....Category:Comics
.....Category:Manga
.....Category:Manhwa
Category:Film
Category:Games
Category:Live Action TV Series
Category:Real People
.....Category:Actor RPF
.....Category:Historical RPF
.....Category:Music RPF
..........Category:American Idol
..........Category:Bandom
..........Category:Duran Duran
..........Category:Eminem
..........Category:J-Pop
..........Category:Popslash
.....Category:Sports RPF
Category:Radio
Category:Theater