Answer by
quisqualis (1756)
They include: Quenya, Telerin of Valinor, three dialects of Sindarin, Nandorin, Adûnaic, Westron, Hobbitish, Black Númenóreans, Dalish, Rohirric, Kingdom of Rhovanion language, Haladin, Dunlendish, Khuzdul, Iglishmek, Entish, Valarin, and more.