Queen or song of the Lord
Rayniah is a modern American coinage likely blending the Latin-derived 'Raina' (meaning queen) with the Hebrew suffix '-iah' (referencing Yahweh). It may also be interpreted as a variant of the Hebrew name Raniya, meaning 'joyful song'.
Less common today
Rayniah isn't in the latest US Top 1000. It last peaked at #11,970 in 2011.
US births per 5-year period, 1990βpresent (SSA data).