If you look at screenshots for Aerith's command menu in battle, she has an ability called Gaia's Wrath, hinting at Geomancer. This may indicate that VIIR may implement the original job titles from early builds of the game in some capacity so...

Cloud: Mystic Knight
Barret - Gunner
Aerith - Geomancer
Tifa - Monk
Red XIII - Beast
Cait Sith - Toyasaurus (Beastmanster)
Yuffie - Thief/Ninja
Vincent - Horror-Terror (Horror Researcher)