My bets.
100%-> Warrior, Rogue, Hunter and Shaman. There is no way one of these are not present.
Now we need a cloth one , between Priets, Mage and Warlock..... i personally think warlock its the most "lore friendly" because Voldun "SPOILERS". Mage its a no go, and Priest well seeing them as a "savage" early development society i believe Shamans are doing that job.
Monk its a posibility, i am not 100% sure on this, because IF VULPERA BECOME MONKS THAT MEANS GOBLINS WORGUEN AND THE "WORGUEN ALLIED RACE FOR ALLIANCE" ITS GOING TO BE A MONK. So there is a lot of conflict here.
Paladin...... you know how triggery would be if Zandalari didnt became paladins and instead for the Horde we got sexy foxy paladins..... oh god no.
Hero classes are a no no for ALlied Races.
And i think that is everything... oh yeah Druid... yeah no with Zandalari and HM Tauren i think there is a lot of Druids in the Horde already and for Vulpera to become Druids there needs to be more things to fill up the aspects requirements... and for bloody sake they are already Foxes LUL