The three largest ethnic group of passengers aboard Titanic were Americans, Britons and Swedes.
Most of the Swedes traveled in third class, but in spite of this, a very large number of them survived - unlike most of the ship’s crew (that mostly came from the area of Southampton, England).
Perhaps we Scandinavians do better in cold waters, or what?
I don’t think that those who survived were in the water, but high and dry in lifeboats.