Level 80s who single target groups of mobs

[Quintessa]

Seeing how the jobs get their first spammable AoE at different levels, the best option would imo be during job quests. Otherwise, you'd need to wait for quest level 40+ until DRG and WHM gets their first spammable AoE attack, which may or may not be too "late" for some avid learners (or frustrated vets ).

For Sam's first is 26
MNK's is 26
SMN's is 35
NIN's is 38.
DRG's is 40
...

WHM and AST are the last jobs to get their first(and only) AOE which is at 45 lol.

Among the melee SAM perhaps suffers the most because they only have like 3 skills to use, where as DRG and NIN have acquired many by 35, which kind of offsets the lack of AOE.