Interpreting the canonicity of the Kyber crystal variants from the Fantasy Flight roleplaying sourcebooks
The Fantasy Flight roleplaying games introduce several new types of Kyber crystals that all have unique characteristics and effects which are pretty clearly designed for gameplay mechanics. I personally don't mind there being different types of Kyber in canon, or even that they have different effects, but some just feel a little weird to me. Such as one type producing a completely transparent blade that's hard to see.
I'm also currently building a star wars setting with a friend that's set centuries after the sequel trilogy where the Jedi of the revived Jedi Order need somewhere new to gather their Kyber crystals from with Ilum gone. I was delighted to find the moon Y'ness which was rich in Kyber and very quick and easy for the Jedi from Coruscant to reach, but I was then disappointed when I read that the variant of Kyber found there only produces non-lethal blades.
From what I've gathered from an older post on this subreddit (correct me if I'm wrong), these games haven't been officially canonized by the Lucasfilm story group, but the mods on Wookieepedia decided to vote on which books should be deemed canon or legends, which is why the articles for these Kyber variants are listed as canon on Wookieepedia.
So how would you interpret the canonicity of these Kyber variants? Personally I'm happy to use the Kyber-rich locations listed in the sourcebooks as places the Jedi of our setting go to partake in the Gathering. Seeing as many of the locations were seemingly created for the game specifically to have Kyber crystals, I think it's possible that future canon media will reference these places as having Kyber as well.
But when it comes to the characteristics of the Kyber variants I don't know that I'll be including those in my head-canon. Some are fine, and I like the idea of different characteristics in concept, but as mentioned, some are just too weird or game-like, and some prevent them from being viable lightsaber crystals for the Jedi of our setting.
I'm curious to hear other people's interpretations as well!