There is no difference.
Both need to be unshielded to work as antenna.
A self confectioned cable would make it easier to match the length of Half-wave resonance, which is ~140cm for UKW on high impedance devices like a phone for perfect results.
My propriatary 1m cable is part of the active speaker but gives good reception "somehow" nevertheless.

I only mentioned it as a work around to have FM sound on speakers, not headphones.