There are a lot of elements that are metal. It has to be ferrous metal to be picked up by a magnet. Aluminum is a metal, along with copper, tin.
No - to be picked up by a magnet an element has to be ferromagnetic. Cobalt, iron and nickel are all ferromagnetic (in fact Co is the strongest). Other elements do also get attracted by a magnetic field in far weaker ways, including oxygen.
I have just seen a scientific study that shows that 'regular' MoS2 is diamagnetic (so weekly magnetic that it won't show up to you and me), although specially-prepared nanosheets of MoS2 displayed ferromagnetism.