https://www.seriouseats.com/yukon-gold-potato-decline-1185730
I did notice that all the yellow potatoes I saw this year at the local Save Mart were all labeled as <something> Gold, with variations on that first word. I didn’t think much of it, and my version of the viral Kenji Hasselback gratin came out just great with whatever gold potatoes I got.
I think ours here are usually just called yellow fleshed potatoes.
My favourite yellow fleshed potato that I grow is a Bintje, which seems to be firmer than the Yukon Gold, and they take longer to cook than most other potatoes I have cooked.
There are some really nice yellow fleshed German potato varieties, too, but they are hard to find in Canada.
