In addition to what Kilieit mentioned:
Black Magic can literally kill you to use without the Soul Crystal. This is seen in the BLM quest line several times over.
White Magic can only be used by those who have been granted the ability by the Elements; otherwise it's completely blocked off.
Summoning is only possible if you are able to fight and defeat a primal without being tempered, thus requiring the Echo which only select MSQ characters (and you) have. The ancient Allagans created the art, though, so it's possible there are ways around that restriction.
Scholarly magic is probably the only one of the 'job' level magic that could be usable by the laymen. Even then, you'd have to find a very rare Nymian fairy to technically accomplish it.
Overall, specific magic that isn't a part the base classes can't really exist for commoners according to the in-game lore. That said, it's kinda boring to play that way, so do what you will. People typically are suspicious of claims of black/white/summoners because of the lore behind them though.
As for Red Mage, it's all going to depend on how it's put out there. Is it like the Paladin, where anyone with the Soul Crystal can be taught? Or is it like Summoning where it can only be you? No one knows yet.
Black Magic can literally kill you to use without the Soul Crystal. This is seen in the BLM quest line several times over.
White Magic can only be used by those who have been granted the ability by the Elements; otherwise it's completely blocked off.
Summoning is only possible if you are able to fight and defeat a primal without being tempered, thus requiring the Echo which only select MSQ characters (and you) have. The ancient Allagans created the art, though, so it's possible there are ways around that restriction.
Scholarly magic is probably the only one of the 'job' level magic that could be usable by the laymen. Even then, you'd have to find a very rare Nymian fairy to technically accomplish it.
Overall, specific magic that isn't a part the base classes can't really exist for commoners according to the in-game lore. That said, it's kinda boring to play that way, so do what you will. People typically are suspicious of claims of black/white/summoners because of the lore behind them though.
As for Red Mage, it's all going to depend on how it's put out there. Is it like the Paladin, where anyone with the Soul Crystal can be taught? Or is it like Summoning where it can only be you? No one knows yet.
My life is a chip in your pile. Ante up!