New to the game and curious about raids as DPS?

[Donaria]

No, dragoon in its actual state is bad, the raid dps it brings isnt enough, gap between ninja/sam and drg is too big.
Actual dps meta right now would be Ninja - Samurai - Red mage - Bard.

Nope nope don't listens to this team comp the nin and sam combo is a waste they both bring slashing debuff why take two? For that team comp I would replace the nin with a drg to bring piercing debuff to buff bard dmg.
In the game right now there are more physical dmg buffs than magic buffs.
Side note the only time the minor potency difference in dmg among the dps is during world first raiding and of course bragging.