Willys was accepting Amex in some prior year too. In some parts, they even had their “cards only” lane with an Amex sign included for some period of time, but it’s generally been a MC or V for me there and at ICA.

Lidl I don’t use much, and they have been Amex-reject central out of the common grocery stores across Sweden. Haven’t been into a LIdl in Sweden at all during this pandemic, but glad to hear that they seem to have come around to accepting Amex.