User blog comment:PurpleWii/Archetype Classification(PurpleWii Edition)/@comment-5035765-20160531044141/@comment-1330314-20160605202602

To be fair, Riot labeled Eve as a Diver under their new system, which I think is ridiculous, so I guess even the game's own developers are capable of making that kind of mistake. I also don't think exact archetypes are a bad thing: if anything, the more you define a class's innate strengths, weaknesses and contributions, the better you'd be at defining exactly how each particular champion stands out, and what tradeoffs they make for their unique features.

It's also worth noting that these definitions are at least partially soft, in the sense that a class's defining features can be played with to some extent (so it's not a must for an assassin to have high mobility and huge burst, even though that's the most typical combination among assassins). Ultimately, classes are defined by their core missions and playstyle, which PurpleWii pointed out to some extent, and whichever kit features that follow are more guidelines than hard rules.