people who are well-informed or knowledgeable about a particular subject

विशेषज्ञ

English Usage: The art exhibit was attended by many cognoscenti who appreciated the value of the pieces displayed.

Hindi Usage: कला प्रदर्शनी में कई विशेषज्ञ मौजूद थे जिन्होंने प्रदर्शित कला के टुकड़ों की कीमत को सराहा।