Job Lore?

[Cilia]

Technically there is one SCH remaining, the tomberry you help and that is still in the palace, you see him in the HM version. But yes, like SMN it's a forgotten art reborn with archeological researchs.

Also the PLD give their teaching to almost anyone capable and deemed worthy of using them it seems. All PLD aren't sultansworn.

While Surito is a remaining SCH, he was stewing in the rancor with the rest of the tonberries until you finish the SCH quest line. The cap gives him away for non-SCH, but unless you do the quests or pay close attention in Wanderer's Palace (Hard) there's no indication any SCH are left.

PLD aren't all Sultansworn (you're technically "knighted" as a "Free Paladin," not Sultansworn) but the Sultansworn (Jenlyns) still have to approve anyone being trained in their arts and hunt down traitors. From the feel of Ul'dah, I doubt many aspiring GLD fit the bill.

[VargasVermillion]

MNKs are disciples of the fists of rhalgar, A cult that become popular within ala mhigo, the idea was that you could attain the strength of rhalgar himself with discipline and personal strength. They became popular enough that the king of Ala mhigo feared the cult gaining too much power and influence so he had the MNK temple raided and killed most of them. The garleans attempted to defeat ala mhigo for a while before ala mhgo was weakened by rebellion against their tyrannical king. (apparently gaius had some influence in this.)

[lilirulu]

snip.

Just to add to the scholar lore; Surito states he can no longer summon his fairy, Lily (a.k.a. Eos/Selene), after being turned into a Tonberry. Judging by him and all the other Tonberries (including Marberry) do not use any magic (that's not tied to the rancor) I think it's safe to say that the Plague of Nym removed their ability to use magic and that as of 2.5 their aren't any more SCH in Eorzea excluding the WoL.