Rulers of ancient Manipur before Nongta Lailen Pakhangpa

There is a well established chronology of the reigns of rulers in Ancient Manipur (Ancient Kangleipak) before the reign of Emperor Nongda Lairen Pakhangba () of the Ningthouja dynasty, that is before 33 AD. According to ancient sources, Nongta Lailen Pakhangpa fought fierce battles against the Khaba-Nganba dynasty to win over the sacred city of Kangla in Ancient Manipur.
First ten rulers.
There is a genealogy of ten successive foremost rulers in ancient Manipur kingdom. 
After the reigns of these ten kings, there is a great historical gap, from 1199 BC to 44 BC.
Rulers after the great historical gap.
After this, the reign of Nongta Lailen Pakhangpa started from 33 AD, with the annexation of the Kangla by the Ningthouja dynasty.
Achievements and Development.
Invention of Polo.
The present day game polo was originally developed from the traditional Sagol Kangjei game, which was invented by King Ningthou Kangba (1405 BC- 1359 BC).
Invention of calendar.
During the reign of Maliyapham Palcha (aka. Mariyafambalcha) (1359 BC- 1329 BC), the present day Meitei calendar was invented and developed in a systematic way for public usage.
Civilizational upgradations.
During the reign of Poireiton, a semi-historical and semi-mythical ruler, there were much advancements in the civilization.