punjabi kayastha
Yes.
No , Bose are amongst 'Kulin Kayasthas' or the highest category of Kayasthas. Kayasthas are the upper most caste along with Brahmins and Baidyas in Bengal . There are only 4 Kulin kayastha surnames Bose , Mitra , Ghosh and Guha , although Ghosh surname is also used by some people from the Sadgope or yadava caste.
Yes..they are generally of East Bengal origin and by caste are kayasthas
Bhatnagars are Kayasthas. As per the ancient texts Kayasthas have a dual caste system, they are Brahmins as well as Kshatriyas. Bhatnagars are mainly found in Northern India (Delhi, UP, Rajasthan and in parts of Haryana and Punjab.)
Yes, Bhatnagar belongs to General Caste. They are considered to be the part of upper section in Hindu Caste system. Bhatnagars are Kayasthas. As per the ancient texts Kayasthas have a dual caste system, they are Brahmins as well as Kshatriyas.
Kayasthas have a dual Brahmin/ Kshatriya status. Source: http://samajpath.org/kayasthhist.html
In Hindu Society, "gotra" means Clan and it broadly refers to people who are descendants in an unbroken male line from a common male ancestor."Shrivastava" (also spelled Srivastava) is a common surname in found in Northern India, notably among the "Kayasthas"."Kayasthas" are a is a cast or community of Hindus.Thus the "gotra of Shrivastava" are a Clan of Hindus form Northern India, similar to the "Metcalfe's" of England.There is only gotra for all Srivastavas (Shrivastavas) and that is Kashyap. Infact all the kayasthas belong to the same gotra Kashyap.
that profession have what profession/line of work are they?
In ancient India most Ghosh were Kayasthas (scribes).
If by "good" you mean higher than the answer is NO, kayasthas are a Higher and a literate and educated class of Kshatriyas, unlike rajputs who are "warrior Kshatrias" anyhow most kayasthas were Ministers and Advisers to Rajput kings owing to their antiquity as the educated gentry among Indian Castes.
In Bengal: In the time of Lakhsman Sen, he had to ban the then brambhins-Chatterjee, Banerjee, Bhattacharjee due to their ill tendency to take "Utkoch" from people for rising them from lower caste to higher caste. Then few brambhins came from Mithila with some servant-Ghosh, Bose, Mitra & Dutta. Those servants r Kayastha and they r belonging to Sudra as per Manu.