Question: who are bhutani by caste?
Answer: Bhutani tribe, a tribe of the Baloch people of Pakistan.
Bhutani language, a misnomer for several languages: Bhotia language or Sherpa language. Bhutia language or Sikkimese language. Dzongkha, the official language of Bhutan. ... 
Bhutanese people, the people of Bhutan.
Bhutani Pony, a breed of pony.