Languages by geographical regions

Africa 5

Emai Ronald Schaefer and Francis Egbokhare
Mandinka Denis Creissels
Modern Standard Arabic Csilla Kász
Nǀǀng Martina Ernszt, Alena Witzlack-Makarevich, and Tom Güldemann
Yorùbá Joseph Atoyebi

Asia 11

Ainu Anna Bugaeva
Chintang Robert Schikowski, Balthasar Bickel, and Netra Prasād Paudyāl
Even Andrej Malchukov
Evenki Igor Nedjalkov
Hokkaido Japanese Kan Sasaki
Japanese (standard) Hideki Kishimoto and Taro Kageyama
Ket Edward J. Vajda and Elena Kryukova
Korean Soung-U Kim
Mandarin Chinese Guohua Zhang
Mitsukaido Japanese Kan Sasaki
Sri Lanka Malay Sebastian Nordhoff

Southeast Asia & Australia 5

Balinese Masayoshi Shibatani and Ketut Artawa
Jakarta Indonesian Thomas J. Conners and David Gil
Jaminjung Eva Schultze-Berndt
Nen Nicholas Evans
Xârâcùù Claire Moyse-Faurie

Americas 8

Bora Frank Seifart
Hoocąk Iren Hartmann
Mapudungun Fernando Zúñiga and Leonel Lienlaf
Ojibwe J. Randolph Valentine and Mary Ann Corbiere
Sliammon Honore Watanabe
Yaqui Zarina Estrada-Fernández, Mercedes Tubino Blanco, and Jesús Francisco Villalpando Quiñonez
Yucatec Maya Christian Lehmann
Zenzontepec Chatino Eric Campbell

Europe (and Indo-European) 7

Bezhta Bernard Comrie and Zaira Khalilova
Eastern Armenian Victoria Khurshudian and Michael Daniel
English Cliff Goddard
German Martin Haspelmath and Luisa Baumann
Icelandic Jóhanna Barðdal
Italian Michela Cennamo and Claudia Fabrizio
Russian Andrej Malchukov and Alexander Jahraus