You misread. 35 and 285 are far from the same ballpark, and it's not really possible to explain that with any corpus. It's much more likely that the author foun

You misread. 35 and 285 are far from the same ballpark, and it's not really possible to explain that with any corpus. It's much more likely that the author found a list of jōyō kanji sorted some other way, and thought it was sorted by frequency.