Started reading a book on Saint Íta and so far I'm finding that she lines up with my expectations of the long-proposed missing Allmother archetype of the Morrigan.
It's been proposed for a long time that the Morrigan, whose husband An Dagda has the epithet "Ollathair" or "Great Father", and whose own name means "Great Queen", may be "Danu", the mother-goddess who gives the Tuatha Dé Dannann their matronymic name.
But the mythic Morrigan lacks this whole side, presenting only as an Ur-Fury.