Probably, it is not quite correct to say “varieties of wine”, since we will talk, first of all, about the grape varieties from which these wines are made. And now about popularity: nevertheless, single wines made from one grape variety are more often bought than blended ones. Probably, with such wines it is easier - to pick them up for dinner, for a dish and for a special occasion. At
https://www.vinjournalen.se/ you can find out which wines are the most popular.