Apricot grafts took!
A big "Whee" moment for me- I finally got a few of these to callous over and it looks like they are viable. I'm forcing them and will see what happens. Apparently I had my best success with chip budding and nearly struck out with conventional budding. A couple of the chips were on surprisingly small stock.
I've fought with grafting apricots several times and it never worked. I finally learned here that it has to be warm for them to callous properly. I had gotten spoiled with apple and pear.
My rootstock was Marianna from a purchased apricot that had winter-killed; the rootstock voluntarily stooled and gave me a little working material. The budstock was from local unknown trees that seem to do well here and produce good fruit.