Abilities: Special, Extraordinary, Spell Like, Supernatural, Natural, get 'em here.

[Phelix-Mu]

Wouldn't that just leave it as an unlabeled ability, rather than any of the Na, Ex, Su, or Sp categories, considering it's not a special ability?

This is my boat. Some class features have their own special rules that defy those set out by Special Abilities. Such class features shouldn't be lumped in with Special Abilities when Ex is clearly called out sometimes in PHB, other times is not, and where MM also often follows this pattern (until the later manuals).

Anyway, did we ever get to the broader implication or conclusion that JaronK was hinting at?