Like others have said, I doubt there are full canon builds for any of them for a couple reasons. 1) With all of the reactivity Larion has built, what's "canon" (especially mid-late game) will vary with each playthrough. 2) As others stated this would be contradictory to Larion's philosophy with the game.
A good example of the first reason would be possibly dipping into Knowledge Cleric for Gale depending on what happens with Mystra. If not, he'll stay full wizard.
I started a thread a while ago, that discussed canon subclasses for each companion:
Companion Subclasses
