a rshi who is very great in his spirituality(great seer),who had reached a 
certain level towards his goal(path)

 a king who is so spiritual that he is also like a rshi 

 a rshi dwelling in the heavenly regions, or, a deva who is also a rshi, the sons of Dharma or Yoga,divine or godlike sage 

 a rshi who has seen the Supreme Spiritual Truth and who were the founders of gotras of Brahmans, or caste-races