What Buddhist babies' names or meaning should be? My relatives ask me to suggest good names that must be Buddhist.
I tried on internet but there are from other culture I want Indian names so what  names or meaning should be?
You should probably start from the Buddhist Dictionary of Pali Proper Names and then find proper Sanskrit versions of the Pali names.

For example, the Pali name Sariputta is Śāriputra in Sanskrit. The full version of this name is known as Śāradwatīputra.