Very nice looking grafts! I had better success this year, but I'm still learning a lot. I've been pushing the envelope but I'm having some success. One of the issues I had was that I started with crabapple seedlings and then grafted apple varieties to some of them. It is certainly possible but it is more difficult. I found that if I graft when crabapples are still dormant, I risk cold snap issues. If I wait until later, the crabs want to push out their leaves early and they get ahead of the apple scion.
This year, I learned that parafilm-M which works great for keeping scions from drying out and for bench grafting, is not the right kind of parafilm for chip budding. It will work, but not as well as another type of parafilm I have. It really takes a lot of grafting to distinguish trends verses luck of the draw because there are so many variables.
You are doing great!
Thanks,
Jack