Something being known worldwide, even to the English, doesn't make that something worth seeing. Most of the Ghibli films are only decent, some actually being totally over-rated. The fact that the Sky list contains so many Ghibli films and, Wings of Boredom aside, no real unknowns, makes it worthless. Glancing through the titles, you can't help but think that the person behind the choices hasn't seen very much.
Edit: All those Ghibli flicks, and no Ocean Waves?... Its exclusion wouldn't have anything to do with it being unknown, would it?