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I think so, at least in Sicily or parts of Calabria.

German or Polish. Looks too "western" and not "northern" enough to be Komi.

Almost anywhere in Middle East, parts of Southern Europe and North Africa as well.

She looks southern European.
Is this a trick question?

Yes definitely. He looks sort of like an Irish-American guy I know.
He is probably Chechen though (not 100% sure if that counts as European).

I think the Malans in South Africa came from southern France (Provence), so I guess that surname is found there too.

Malan is a common Afrikaans surname.
https://en.wikipedia.org/wiki/D._F._Malan
https://en.wikipedia.org/wiki/Magnus_Malan

None, really. Bjork could almost pass as a Siberian native (Khanty or Mansi) and the last 2 women (Cuesta and De Falco) could pass as MENA people.
Greta looks strongly northern (northeastern)...

Yes there are a lot of South Asians here.

He could, but that wouldn't be most people's first guess.

He could, but that wouldn't be my first guess or most people's. He looks like an atypical South Asian.

Where I live (in the Pacific Northwest) he would be recognized as South Asian.
He looks like an atypical South Indian or Bengali.

Beautiful lady, looks more than a little like Anne Hathaway. I imagine Roxana (Alexander's wife) looking like her.

About what I would expect as Icelanders are a mix of Scandinavian and British Isles (Irish/Scottish).
The Finnish is interesting. Assuming it's more than noise, it might have something to do with...

Looks a little bit like Zuckerberg, especially in the first pic.