Thanks, nostr:npub14hals7mg55wgdj0lwv3p2th0lk5jz9whseagcqkcjamvqqmlf4fsckpqf0 that is very helpful!
With a quick internet research, I was able to find four of the varieties from the article in German plant retail. Anna and Ein Shemer are not among them, but they apparently are from Israel. I'm not sure about all climate zones there (chill in elevated areas?), but they should do with few #ChillingHours.
Some of the varieties are available in British plant retail. After Brexit, this would mean, I'd have to smuggle them out of the country.