Well, yes, I think that: bits I like from the EDAs and NAs, and then most of Eight audio is absolutely canon (except for all the ones I haven't listened to and might not be yet). Big Finish convinces me on pretty much every count, except for there being lots of stories between Planet of Fire and Caves, because this is clearly untrue. ;-)

And given that Gallifrey has at least some very big near misses in the audio, that might be three times. One might think the Doctor didn't like his people much. :lol: ("If I keep trying, one of these days it's going to work!")

I've not read any of those. I've heard bad things about them & didn't dare read them, because there was always the danger that I would end up liking them. :-)