I flew from Reykjavik (BIRK) in Iceland in the summer and was amazed to find not only all comms in Icelandic but they even use their own Icelandic version of the phonetic alphabet ("Ragnar" not Romeo etc)! Lots of international flights through there.
That's how it was and is in Sweden where I started flying too. They use a Swedish alphabet.
Adam
Bertil
Cesar
David
Erik
Fredrik
Gustav
…..etc