If my memory is correct I have predominately seen the following for EU:

-PVE: Pyrewood V. (Normal English);
-PVP: Shazzra (PVP English);

I have not seen anyone discuss nor post about Zandalar and I received no hits when searching our Forums.

I am in the process of putting all the data from the 'List of Classic WoW Multibox Teams' thread into a new Google Forms based spreadsheet and hope to have graphs available soon with more details.

TThe above being said my memory may be incorrect as I my head is swimming a little right now as I have never done Google Forms before and I have read so many threads/posts they all seem to be bleeding together right now.