In Northern Italy , croissants are called Brioche. They are plain , filled with marmalade or cream. Sold all over Italy , in every bar and Autoservizio stop. Carnettos are found more in the south of Italy. In Italy , you can find a big donut called a "bombetto"
In many regions there are different styles. Some have fresh honey or marmalade to put on your brioche. Other areas fill them with chocolate. In Liguria , foccacia is the local morning favorite.
Medialuna's in Argentina are just not as good as the French or Italian versions. Although with enough butter or marmalade are edible.