I think that you could consider everything from fanzines and fanfic through licensing to what gets onscreen as a large ongoing dialogue.

Some cool things drift around for a long time, so it’s not even clear if they originated in specific tie-in fiction unless the authors themselves identify who came up with a name - as we can do with Number One being given the name Una.

The preponderance of EPs at this point are fans who bring their own longstanding ideas of canon, but they’re to some extent influenced by the ongoing fan and licensing dialogue.

In some cases, especially with Goldsman who was deep in the fanzine debates of the 70s, I get the idea that he’s intentionally working to counter longstanding fan headcanon or interpretations that he sees as a barrier for new generations to accept TOS.

When we get to tie-in fiction, the writers of licenced products are in most cases also fans, and, like Goldsman, have been immersed in and speculating on past canon for decades themselves. And then the younger television writers have clearly been reading some of the tie-in fiction or playing the games. Or they themselves have been written them, or at least their consultants.

As a Treklit fan, I am seeing that the new shows increasingly draw on the licenced tie-in writing, both books and comics as well as STO.

Discovery season two pulled in the S31 Control AI concept. Picard season three brought STO ships to television, but also paralleled and wove in elements of the the TNG characters from the Relaunch books.

I don’t think it’s reasonable to attribute it simply to Beyer’s influence as a tie-in author who’s now an in-house canon anchor and writer on all the live-action shows. That’s part of it, as are David Mack’s contributions on Lower Decks and Prodigy.

Prodigy has brought the Brikars (originally created by Peter David for the YA Academy books) into onscreen canon. That’s probably my favourite ‘canonization.’ But Mack has also encouraged a restoration of noncommissioned officer roles and several other subtle ‘solutions’ out of Treklit.

Anyway, its an interesting thing to trace.