No. WFBS have a different shaped earlobe.1 looks more like a birchen Cochin cockerel to me
2 agree it's probably a black Dutch bantam pullet. Could be a Minonorca or white faced black Spanish bantam pullet, too.
3 maybe self blue instead of porcelain d'uccles. Pullet.
4 agree with the others
She is porcelain. See the buff coming through? (I am a D'Uccles breeder).