No Kshatriya were the Rulers Varma............and Namboodris were the Brahmins..............Other than these two all other Hindus were Untouchables...............
Read this from a Nair site..............
CLASSIFICATIONS NAIR COMMUNITY
There is considerable controversy regarding the actual place of Nairs in the caste system. It is understandably, a very touchy subject. One of the main reasons is that the caste system in Kerala is very different from the caste system elsewhere in India. According to the caste system followed in the rest of India, only the lowest class, the sudras, were considered to be "untouchables".
However, in the case of Kerala, anyone who was not a Namboothiri, was treated by the Namboothiris as an untouchable. The Namboothiris had different rules regarding the degrees of pollution for the different classes.
A Namboothiri could only be "polluted" by the touch of a Nair, whereas the other classes had different distances after which they could be considered polluting. For example, if an Ezhava got within 24 feet of a Namboothiri, the Namboothiri was considered to be polluted. In this regard, it would seem that the Nairs were like the sudras in the rest of India.
BASED ON PROFESSION
Kiriyath Nair Family man. Those who attends the affairs of his Kiriyam (House).
Illathu Nair Dependent of a Brahmin Illam (house).
Swaroopathil Nair Dependent of a swaroopam (Kshathriya Home). Also known as Chartha Nair.
Menokki Those who supervises.
Pattola Nair An accountant. One who writes kingly orders and keep accounts.
Marar Marayan. One who beats drums in temple.
Padamangalam Nair Servants of temples.
Pallichan Nair Those who carries Pallichumadu or Manchal
Chembotti Nair Copper worker.
Edachery Nair Idassery Nair.
Odathu Nair Bronze worker.
Vattakkathu Nair One who extracts oil.
Anthur Nair Maker of bells.
Asthikurrissi (Athikurichi) One who performs rituals in the funeral of Nairs. Also known as Seethikan.
Vyapari Nair Merchant
Vilakkithala Nair Barber
Veluthedathu Nair Dhobi.