Effects you describe are not used for propulsion because they are short-range and you can't really for example push away from Earth using magnets. The only practical space-application are https://en.wikipedia.org/wiki/Magnetorquer - electromagnets which can be used to stabilize the spacecraft along magnetic lines.

You can use magnetic forces for some plasma propulsion engines like https://en.wikipedia.org/wiki/Magnetoplasmadynamic_thruster