When doing a Discogs search (via Mp3tag), the results-pane sorts (I think) by the first column, i.e. the artist name.
I wish it was possible to set the default sort to be Year
It is possible of course to click the "Year" heading each time, but that's a nuisance when searching multiple items, one after the other.
It is also possible to drag the columns into a different order - but that does not persist for future searches. That would (otherwise) be a good way for us users to define sorting priorities, left-to-right. I would use that to sort primarily by year and secondarily by country.