I believe that the tag sentience is not necessary given that we already have artificial-consciousness and emotional-intelligence. A sentient AI is an an AI that perceives or feels (according to the dictionary definition of "sentient"), so all questions about sentient AI fall either under emotional-intelligence (or artificial-consciousness), so I suggest it should be merged with emotional-intelligence.
- Sentience can refer to biological agents, so has a broader scope.
We sometimes discuss intelligence in general, as a concept underlying AI, and do too with sentience.
- Emotional intelligence seems to be an informal term related to a specific kind of decision making
I don't see much relation to sentience in general, except that we regard only sentient beings as having emotions in the conventional sense.