I forgot Catwoman, her origin is a complete mess.
Yeah, even I forgot to include her in my initial list.
Especially since there's been an 'Everything Happened' approach to hers (and Batman's) continuity lately, I think its high-time we had a retelling that sorts everything out - which reconciles her early burglaries as 'the Cat' with her early Year One escapades inspired by Batman.
Mon-El. I've tried to forget his various origins since the original.
Instead of retelling the exact origin, maybe they should try a Season One style approach? Marvel did "in the early days " approach for those stories and that something that could work here.
Whenever they (finally?) return, the Justice Society of America may need a new origin (re-)telling (to clarify what is and what isn't still in play with them).
The Falcon Rider needs retelling and so does Green Emerald
As far as I am concerned, all of Kara's history is now in play in the same way that all of her cousin's long history is now in play.
Until the comics specifically state otherwise, Kara Zor-El first arrived on Earth several years ago, died heroically during the Crisis with Barry Allen, and was later returned from the dead thanks to cosmic/temporal shenanigans that has screwed with her memories ever since. I'd even posit that her disembodied spirit is what gave life to Luthor's Matrix in the first place.
Prove me wrong DC