OK, So an update on A330s suing original post guidelines. There are 3 types of them:
Old configuration
The two old "Air One"-style A330's are still running on BOS and YYZ only (I was told by 2 different Alitalia personnel, though they mentioned sometimes subbed on ORD).
The seating is 20 J and 263 Y. The J seats are horrible, kinda falling apart and the tray table does not get flat if you are big or tall (you thighs or knees prevent it from being flat). Very bad hard product. On an overnight from US the other problem is that lighting is centrally managed and even if J is not eating and could go to sleep lights are kept on for long time because Y needs them on. Ridiculous if you ask me
2014 configuration
All as in the opening post.
Etihad A330-200 - Registered as I-EJGB
One of these operating as AZ with AZ livery and all but owned by Etihad. No Premium Economy. New magnifica as on the 2014 A332, with 1-2-1 in J. 22J 240Y