Dear Sir
Under citizenship laws, a person is an Indian by birth if born in India on or after January 26, 1950, but before July 1, 1987, so in that case only your birth certificate should suffice as Indian Citizenship proof.
If a person is born after July 1987, he or she can claim citizenship if either of the parent is a citizen of India. So in this case, own birth certificate along with one your parents birth certificate may suffice as Indian Citizenship proof.
For all born in India on or after December 3, 2004, they can claim citizenship by birth only if both parents are Indians, or if at least one of the parents is a Indian citizen and the other is not an illegal immigrant at the time of birth in India. So along with one's birth certificate, both parents citizenship proofs would be required which shall be again subjected to above conditions.
Documents such as Vote Id Card and Passport may be considered citizenship proof with the birth certificate as per above mentioned cases.
A Driving License is no valid proof of citizenship, hell it's not even considered as valid address proof in many cases. It's mostly treated as identity proof of one's.
Contrary to popular belief AADHAR Card is also not a proof of Indian Citizenship.
Caste certificate in some cases is being considered as Citizenship proof, but not everyone have one so it's also not universal.
So your best bet may be birth certificate or passport. Although none of both can fully establish of you being Indian Citizen.