Another exercise that you might do with this list is go to IMDB and see how many user comments/external review exist for these films...
Films from the US, UK (though I don't see any on the '61 Cannes list...oops, there is one there, directed by Guy Green), France, Italy, and Germany will tend to have a longer shelf life and retain some familiarity. But the Eastern bloc (including Greece) and the films from Scandinavia (non-Bergman division...) just seem to go down a rabbit's hole.
That is starting to change, but it's happening at a relatively glacial pace.
P.S. -- Dinos Dimopolous, represented in Cannes '61 with MADALENA, was the director of LOLA, one of the two Greek noirs we screened at RARE NOIR 3 last month.