I don't know any 4th century Greek, so I don't know. 

The French Catholic is "de même nature que le Père" (same nature). The Greek Orthodox use "one essence." In my view, these preserve the individuality of the Father and Son, so one is not the other.  Same nature is not quite the same as same substance, which blurs distinctions. "Same being" or "one being" goes too far.

http://www.eglise.catholique.fr/foi-et-vie-chretienne/la-vie-spirituelle/priere/credo--symbole-de-nicee.html 

It looks like the Church of England has "of one Being with the Father" at https://www.churchofengland.org/prayer-worship/worship/texts/newpatterns/contents/sectione.aspx

But they do not slight Mary but rather say "was incarnate from the Holy Spirit and the Virgin Mary"

The French Catholic has Jesus assisting in his own nativity - oh la la - with “by the Holy Spirit, he took flesh from the Virgin Mary, and made himself man,” (“par l'Esprit Saint, il a pris chair de la Vierge Marie, et s'est fait homme”).