Eastern Common - variation on Common used in Istio, sounds similar to real-life Greek
Southern Common - variation on Common that used to be the main language of the Dune Kingdom, sounding similar to real-life Arabic. There are few remaining that still use it after the massacres in that region.
Lower Elvish - Came about organically due to the working classes constantly switching from Common to Elven. It is a wholly new dialect, with recognizable elements from both parent languages. It is primarily used in the larger cities in Feredas, where many elves and humans intermingle.
Precursor Runes - some dedicated researchers have pieced together bits of the language of the Precursors, though no one is quite sure how it actually sounds spoken aloud. The language is written in Runes, each having variable meanings depending on context and tone, making it rather difficult to accurately read and reproduce.
Deshi - The native language of the Teotl, or Lizardfolk. Very guttural, sounding to most like low growls and hisses. Difficult for non-Teotl due to the existence of cheeks, and the lack thereof on the Teotl.