My understanding is Yes, Yes, No.
Dynafit does publish a detailed standard.
(I've had a partial copy of it for years now.)
No, it's not enforceable by rule of law or something, but there is a detailed published standard for anyone to follow.
And even if there wasn't, the dimensions are easy to copy just by grabbing a pair of old Dynafit boots.
Why would anyone deviate from it?
So Tecnica made their dimples too shallow one year (their first year IIRC), Garmont made their dimples too deep one year (their last year!), and apparently other companies don't get the left<>right span distance exactly right.
The most amazing part was when Garmont initially denied that anything was wrong (according to WildSnow.com). This past fall, I was rather surprised (or maybe not...) to see a northern New England climbing shop selling last year's Garmont boots at some trivial discount. I clipped the boot into an adjacent consignment ski/binding setup, and the loose fit was immediately obvious. Then I tried to twist it out (toe lever in ski mode, but heel pins not engaged), the resistance was obviously all wrong. Kind of a dead horse since Garmont is now bought out by Scott, but Garmont's denial was pretty much on par with the dead parrot skit, and their flouting of the Dynafit standard was inexplicably strange -- what do they hope to gain from such deviations?