Gracious
A modern American creation, likely a feminine blend of the prefix 'Ra-' with the name Shauna. Shauna is the Irish feminine form of Sean, which ultimately derives from the Hebrew name Yochanan, meaning 'Yahweh is gracious'.
Less common today
Rashauna isn't in the latest US Top 1000. It last peaked at #7,711 in 1991.
US births per 5-year period, 1990βpresent (SSA data).