The fact that the name "Yuri" is on this list is interesting because "Yuri" is both a masculine Slavic name and a feminine Japanese name. The rapid switch could be due to the growth or decline of one of these names, where the two usages of Yuri are distinct (from different languages), as opposed to one name whose associated gender changed.
Similar for Angel, which probably includes Ángel. I would consider them the same name. Even with the shared meaning, the pronunciation is different enough.
