I have done similar grafting experiments, although at present I am navigating a change in motivation. I got into apples through cider, but gave up alcohol this year. (As an aside, this was a long time coming and absolutely worth some small sacrifices!)
While I’m interested in heritage apples, I think it’s probably more important to find and cultivate wild apples showing attributes that can keep them hardy in 21st century climate. An apple that thrived over a century ago depended on conditions that are different today and are continuing to change.
Some cool people active in this space include:
- https://gnarlypippins.com/6th-pomological-exhibition-high-hi...
- https://www.mofga.org/trainings/annual-events/seed-swap-and-...