There are four main types of decentralized or distributed networks on the blockchain:
Public blockchain networks: public blockchains are permissionless and allow everyone to join them. All blockchain members have the same rights to read, edit and validate the blockchain. 
Private blockchain networks: a single organization controls private blockchains, also called managed blockchains. The authority determines who can be a member and what rights they have on the network.
Hybrid blockchain networks: hybrid blockchains combine elements of private and public networks. Companies can set up private permission-based systems alongside a public system. 
Consortium blockchain networks: a group of organizations controls consortium blockchain networks. The pre-selected organizations share responsibility for maintaining the blockchain and determining data access rights. 