Over the years since the G1 cartoon aired there has been a ton of retconning. We've had the Beast Era, JP G1, Dreamwave and certain IDW comics, FunPub and various Q&A's all doing various things to retcon the G1 cartoon and it's many inconsistencies.

I personally consider just the G1 cartoon and Beast Wars canonical to the G1 cartoon universe. Dreamwave, G1 cartoon related IDW and FunPub are no better than fan fiction to me as the people writing them did not work on the shows. JP G1 is a separate universe in the Transformers multiverse to me just like Marvel G1. I use Q&A responses from the people that worked on the show and Hasbro themselves to better fill out my understanding of the G1 canon.

Of all the sources what do you consider canonical to the G1 cartoon?