Which nodes will be involved to a greater extent in order to achieve consensus on the entire system?
Core nodes are key players in the consensus. They compile transactions into blocks. The following section addresses node synchronization processes, block generation, the network consensus process, and the distribution of blocks to torrent nodes.
Somewhere I read that every node has an allied node. Something like a hierarchy. Is it so?
Yes, core/slave/verification/torrent nodes have a parent node and the type of parent node depends on the current node role of a network.
Role - Parent nodes
Core node - Slave core nodes
Slave core node - Torrent nodes
Verification node - Nodes the Verification node is giving the information to
Torrent node - Nodes the Torrent node receives the data from
Each role provides specific services in both synchronization and consensus subsystems. To make the #MetaHash operation principles more comprehensible