Kalanchoe blossfeldiana has been reliably root-hardy.
Firecracker (Russelia equisetiformis) cutting looks OK. The two mama plants are not showing any signs of life, which doesn't surprise me. Root balls in peaty store-soil have about a 10% chance of survival, IME, especially if only marginally hardy.
This is a fun surprise. When I trimmed crown of thorns (Euphorbia milii), I didn't want to start more pots of it so I put the cuttings in the ground. They looked great and then frost came. But, almost all are still alive. It was not hard to know where to look since I left the old thorny stems in place as "tags."
Same thing with Aloe juvenna. I'm not in love with this plant, so having it in just 1 pot is enough for me. IDK if it can grow enough to be a noticeable addition to the landscape, we'll see what it does.
A Begonia, mallet-type I think, either 'Frosty' or 'Sinbad.'
Polka-dot plants are reliably root-hardy. Emerging growth for this year:
