Ah, I wondered what happened to the Allan ones. So sad. I used to buy ten cases of them every year to enjoy year-round as a sweet treat. My husband was just asking about the rainbow ones yesterday too and I said we'd look for them, but not now since they don't exist any more.
Bulk Barn had Spangler large candy canes and the label was much like that of Allan, with free from X, Y, Z (I forget what all the list included, but for sure free from peanuts, tree nuts, milk and wheat) and made on dedicated lines in a PN-free facility. I bought a few, and may go back to buy a bunch more to enjoy throughout the year.
Dare makes PN/TN-free shortbread also.