???
Isn't conductivity pretty much the defining characteristic of what makes a metal a metal?
At any rate, any metal that people have access to in ye olden days will be conductive. If there really is such a thing as non-conductive metal, I'm sure it's some quite rare and exotic stuff.
Being malleable enough to easily make thin wire out of is the more difficult part. But both copper and gold qualify nicely, and both of those should be very familiar to people even a very long time ago. Possibly, lead might also be usable, and that's also something people in antiquity should be familiar with already.