I've never heard the song, and I don't think
Sharona is much on an improvement over
Sharon. It doesn't look like the form of the biblical name but rather the trendy (or ex trendy) prefix Sha- with
Rona tacked on to honour a
Ronald.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080