I am trying to make a 2024 version of my paladin. I can pick Oath of Devotion because it is free. I can pick the Xanathar’s options and Oathebreaker because they are from 2014 content I own, but I cannot pick the 2014 version of things I own if they’re in 2024 content I don’t own. I can’t use the Oath of the Ancients.
My group uses Emmet Bryne’s custom fillable sheets. They are free and far better than the garbage that is Beyond, and also much more homebrew-friendly.