Yeniseian languages
Yeniseian is a language family with 3 languages profiled on Glottosphere, spoken in Eurasia. The largest by number of speakers is Ket. 1 of them is listed as endangered.
Classification and countries: Glottolog (CC BY 4.0). Endangerment status: Endangered Languages Project. Only languages with a profile here are listed, so the family may have more members.