Dps jobs share at least 90% of their abilities
If your job is a dps it probably has at least 90% of these abilites:
- Deals damage, fills some gauge/gains a marker;
- Deals AoE damage, fills some gauge/gains a marker;
- Deals damage, applies a buff/debuff/dot;
- Deals AoE damage, applies a buff/debuff/dot;
- Deals damage but OGCD;
- Deals AoE damage but OGCD;
- Spends gauge/marker, deals big damage:
- Spends gauge/marker, deals big AoE damage;
- Deals damage but ranged (if your job is melee) or instant cast (if your job is magic dps);
- Some gap closer/movement tool;
- Some instant gauge/mark filler
- A couple of self buffs (probably a damage buff or a defensive);
- A couple of party buffs;
- Fill the rest with combos/procs.
Which means that all the jobs identities are on their gauge management and that's it. There's no cool unique ability that a single job does that no other doesn't unless it's some weird thing that doesn't apply in gameplay very often.