I really don't see why it's so important for people outside of a religion to know exactly what every specific title and position is for. It's enough that you know they carry weight within their religion for most things you'd be concerned with.
And if they're that curious, they can ask.
If the members of the religion get tired of people asking and having to explain due to lack of information, they can get off their rears and update their wiki page.
You won't see protest from me, so long as the elders' titles show and religion granted recognition for their authority.