...Not as individual 'things', anyway. All of these are the effects of the energy-gravity battle between particles at different energy levels... the varying degree and state of every particle (super-gamma split, sub-gamma photon, polarised-bound (quark) or unpolarised (lepton) make for the different 'effects'.
Magnetism is simply 'synchronised gravity'... of atoms whose outermost electrons are in that 'sweet spot' that is just to the inside of the overall atom 'event horizon': while being retained by the atom itself, that outermost electron(s) can 'broadcast' its gravitational signature while being affected by other similar atoms; the gravitational effects of electrons deeper within an atom's sphere of influence tend to be 'stifled' (negated) by the atom itself.
The centre of both gravity and magnetism (and this is no coincidence), 'negative squared' rules everything. Weak and strong forces are simply the 'proximity factor' of two particles, or the difference between two (bound) particles and another.
