I'd never thought of 'ex officio' as an inapt(r)onym, but if it's good enough for the editor of the Washington Post, it's good enough for this list.

In a recent review of a biography of Simone Weil, the Post refers to her as the 'ex officio patron saint of [I can't remember what of... probably either existentialists or anorexics, given that SW was indeed an anorexistentialist].

'Ex officio' means 'arising out of one's office', and not, as the WP clearly thinks*, 'unofficial'.

* which is not to say that I'm suggesting the WP thinks clearly - au contraire.