I think that’s the important criteria. It has to mean something to the reviewer. When I choose one my thought process is 1) does it mean a lot to me 2) will it be ‘new’ to at least some 3) does it have at least some artistic merit that makes it stand out. 4) is it different enough from past picks.
I think that's it isn't it.
If asked, I could find something to nominate from more or less any given decade. And of most genres. And possibly from preferred countries too. But the priority would be things without preconception as 1 and 3 above. If they happen to be within 10 years of each other or along the same A-road, hopefully doesn't matter.