I guess it's technically cloning since the the method of conception and birth isn't 'natural', but as others have stated, this is fantasy, so regular rules don't apply. People can be reality warped or magicked into existence and are still considered the real deal, so ambiguous sci-fi methods should not be handled differently. In regards to souls, philosophically what's happening in Krakoa is more like reincarnation since the dead are getting new bodies.