All of them will be shown step by step.
Common metals are magnesium, cobalt, nickel, copper, and iron.
The oxides are semiconductors with resistivity that decreases with temperature, hence the name. The temperature dependence of resistance is enormous when compared to other materials. Roughly speaking, NTC thermistors are an order of magnitude more sensitive than other temperature sensors. This high temperature sensitivity is one of the main advantages of NTC thermistors. Also, high resistance values are available, which makes lead resistance negligible in many instances.