In "King Shark", we can see King Shark from Earth Two. Then, we can also see his doppelgänger from Earth One, Shay Lamden. This one is dead after the S.T.A.R. Labs particle accelerator explosion. But in the comic book series, The Flash: Season Zero (whose the story is written by Andrew Kreisberg), this Shay Lamden from Earth One survived to the S.T.A.R. Labs particle accelerator explosion and became King Shark...

So, the fact that episodes of are importater than comics chapters implies that these chapters (King Shark arc) are now non-canon in the continuity of the Arrowverse:

So, I think we can create a template for indicate it's non-canon. And, we can create two articles for Shay Lamden from Earth One:

Also for his wife, we can create an article canon without parentheses, and an article non-canon, with "(The Flash: Season Zero)" parentheses

Also, for characters appearing in these chapters we can figure "non-canon" or something else on these characters article, on their appearances and on the details on their article pages.

So, what do you think?