In the sense of being an insulation, no metal can be a poor conductor of electricity. There are however metals that have a high resistance among them. Some are used as resistors. We may also list metals with higher resistance if we take them into account.
In that order, Lithium, Zinc and Nickel are followed by Tungsten. At 9.28×10-8 Ohm.m, Lithium is the most resistive of all metals. Tungsten’s resistivity is lower at 5.6×10-8, while nichrome is even lower at nichrome. Because of their high thermal properties, Nichrome and Manganin are used as resistors. Tungsten is used to make lamps.