Personally, I still think the Plagueis life-creation route is the best one to go down. It connects Rey to Palpatine in a way that doesn’t feel contrived, while at the same time completely preserving everything said in the TLJ reveal. If you don’t like the idea of Palpatine creating Anakin, you can even have Rey be a sort of “dark Chosen One”: a Sith counterpart to Anakin, created by Palpatine as his personal revenge for Vader’s betrayal.
This. I intentionally worded it in such a way that it’s unclear if the Force merely reacted the first time around (the current lore explanation) or if he did intentionally make Anakin as well.
And Eddie, besides my previous explanation of how Rey knows she’s always had the Force in her (“Something inside me has always been there, and now it’s awake”) and all children have to be born with the Force according to canon, that also sounds quite convoluted.