There are three types of communities discussed in the document. The first is a zamindari system introduced during British rule where a zamindar was a landlord who collected land revenue from peasants to pay the state. The second is a panchayat raj system, which is India's current local governance system consisting of gram panchayats at the village level, mandal parished at the block level, and zila parished at the district level. A third type discusses urban communities but no details are provided.