I think of "Vintage Yuletide" (a term I just coined...but that really should be "Legacy Yuletide") as "things that have always been Big Yuletide Things" ...like M*A*S*H, Narnia, Good Omens, Discworld... that kind of thing.

Several of the things that were steadily large staples of Yuletide have literally become ineligible BECAUSE of the number of stories that were written FOR these fandoms IN Yuletide. :-)