Doctor Who Alternate Incarnations

(This is the sort of thing I do when I'm bored. It's even sillier than the family tree.)

Question: Is it possible to create a coherent history of alternate incarnations of the Doctor, based on the various actors who've played him outside the main sequence?

Answer: Probably not, but here's what happens if you try.
( Contains spoilers for Big Finish's Doctor Who Unbound range. May also contain huge inaccuracies, since I've not actually listened to them. )