1. Kekaya - there were 5 brothers namely Kāśika, Sukumāra, Nīla, Suryadatta and Śaṅkha, who had been deposed of their throne. The other Kekayas were on the Kaurava side
2. Kuntīrāṣṭra - Kuntībhoja and his son Purujit
3. Magadha - Sahadeva
4. Pañcāla - Drupada
4.1. The Somakas, Srinjayas, Prabhadrakas etc. were part of the Pancala tribe.
5. Śibi - Śaibya (4.72)
6. Other minor kingdoms/tribes/sub tribes
6.1. Anūpaka
6.2. Aśmaka,
6.3. Coḷa
6.4. Daśārṇa
6.5. Dāśeraka
6.6. Draviḍa
6.7. Hūṇa
6.8. Karūṣa
6.9. Keraḷa
6.10. Kulinda
6.11. Kuṇḍīviṣa
6.12. Laḍaka
6.13. Maṇḍaka
6.14. Niṣāda
6.15. Paṭaccara
6.16. Pauravaka
6.17. Piśāca
6.18. Prayāga
6.19. Śavara
6.20. Taṅgaṇa
6.21. Uddra
6.22. Vatsa
7. The kingdom of indraprastha under the kingship of Yudhishtir
8. Cedi - Dhṛṣṭaketu, son of Śiśupāla
9. Kāśī - Kāśīrāja
10. Matsya - Virāṭa
11. Pāṅḍya - Sarangadhvaja
12. Lord Kṛṣṇa, the head of all Yadava kingdoms/tribes, himself stayed on the Pāṇḍava's side without fighting in the war and merely acted as Arjuna’s charioteer. He had however lent his army to the Kauravas
12.1. Sātyaki, another of the Vṛṣṇi Yadava race however did not go to the Kaurava’s side with the rest of the Nārāyaṇa army, but instead acted as a commander of 1 akṣauhiṇī of the Pāṇḍava's troops from various kingdoms
