Thank you for all your responses. I'll just chalk it up to happy cuttings. They look really good and healthy.
I'm beginning to think that these cuttings are just super eager to grow! They've been potted for less than a month, had no roots, but I think I'm actually seeing a bit of budding as well.
I bought them from a seller on Ebay. He's the guy I get most of my succulents
from. I usually get them already rooted but, since I wanted more jades than he had at the time, he offered me cuttings at a reduced price. Everything I've ever gotten from him has grown like crazy. I wonder what he does to his plants
I'll have to email him and tell him about the cuttings.