Kugor: SWMA3 p200, SWMA4 p232, references essentially identical. Described as being taught to the Lotana priesthood, Xa-ar p74, also suggested as a PC language p42.
Jaimani-Erlin: SWMA3 p199, SWMA4 p231, Player Guide p44, references essentially identical, dialect of Erlin used as a common tongue.
Rhaya: SWMA3 p200, SWMA4 p231, references essentially identical, described as being the predominant dialect of Jaiman with seven distinct dialects (one for each of the six kingdoms and another?).
Syrkan: SWMA3 P200, SWMA4 p231, references essentially identical, described as being a blend of Haidic and Umli, spoken by Syrkakar.
Fustir: The related Fustir-Gost speak an Umli dialect, The Iron Wind p11. Only references to Umli language appear to be here and in the description of Syrkan.
Haidic: SWMA3 p200, SWMA4 p231, references essentially identical. Syrkan is described as coming from Haidic and Umli roots. Presumably there is a Haidic language, but there appears to be no other reference.
Quaidu: No languages given. They are mostly soldiers for others, so it seems likely they will use the dominant tongue of where they are.