"Canon" really only applies to things that have an officially stated or printed canon of some sort, and a lot of works of fiction, especially ones aimed at kids and families and don't really try to be particularly story or setting-driven do not have one. Mario is one such example.
Zelda...
The thing that bugs me about them recycling Bowser Jr.'s model for Baby Bowser is.... Baby Bowser has had 3D models before. One in Yoshi's Story, and another in Melee. The one in Melee in particular is clearly in the style of then-recent stock Mario character models, so I dunno what was stopping...
Thousand-Year Door ends with Flurrie going on to star in an adaptation of the game's events, so even though the game itself is presented as a play, it had to have actually happened in order for it to get adapted into a play in the first place.
I'd like to point that despite what Miyamoto said in that interview, Nintendo as a whole has literally never actually treated the Mario characters as actors. For comparison, look at the way Disney treats the Mickey Mouse characters, or the way Warner Bros. treats the Looney Tunes characters, or...
It is kinda weird that the whole "no new original characters" thing seems to largely apply to Toads. It'll also be weird and pretty unfortunate if this rule is still in place and Mario RPG was some kind of special exception just because it's a remake of an existing game.
While the ages obviously don't make any sense in games past Partners in Time and Yoshi's Island DS, I pretty much accept those heights as official until another printed source comes along.
Bumping this because I only just recently realized I made a mistake on one of these entries:
I originally said 空ブロック/kara block under Super Mario World means "air block" but I forgot it was actually referring to empty blocks. So I fixed that, lol.
Nintendo themselves called 64, Sunshine and Odyssey 'miniature garden games' while Galaxy, Galaxy 2, 3D Land and 3D World are 'stage clear games' so there you go.
I never believed the latter two names were ever official in any capacity, mostly because 'Ala-Gold' (or rather Allah Gold) is from Star War The Third Gathers: The Backstroke of the West.