Three-level hierarchical hybrid wired-wireless Network-on-Chip (NoC) architectures are proposed in this article. Various hybrid wired-wireless configurations have been proposed and examined under various traffic patterns at low, medium, and high traffic loads. In the proposed three-level hierarchy, the bottom and top levels are concerned with subnet topology and wireless hub topology, respectively. The present research introduces a middle level that investigates the number of nodes that will be connected to a subnet's wireless hub. Mesh and fully connected wireless topologies have been chosen for the bottom and top levels of the hierarchy, respectively. Different hybrid wired-wireless configurations have been developed and studied by varying the number of subnets and the number of nodes to be attached to the subnet at the middle level. The objective of investigating the middle level is to reduce the number of subnets and, consequently, the number of wireless nodes in large network architectures without compromising performance.