| Language | Population | Bloc | Family | Cluster | Band | |
|---|---|---|---|---|---|---|
| ● Waskia | 24,300 | Trans-New Guinea | Pihom-Isumrud-Mugil | Isumrud | Kowan | |
| ● Gavak | 5,100 | Trans-New Guinea | Pihom-Isumrud-Mugil | Isumrud | ||
| ● Brem | 1,590 | Trans-New Guinea | Pihom-Isumrud-Mugil | Isumrud | Mabuan | |
| ● Malas | 860 | Trans-New Guinea | Pihom-Isumrud-Mugil | Isumrud | Mabuan | |
| ● Korak | 690 | Trans-New Guinea | Pihom-Isumrud-Mugil | Isumrud | Kowan |