Gracious
Sheneka is a modern American name, likely a creative variation of Shaniqua or Janeka. It incorporates the 'Sha' prefix common in African American naming traditions with the Hebrew-derived root for Jane or Joan, meaning 'God is gracious'.
Less common today
Sheneka isn't in the latest US Top 1000. It last peaked at #3,779 in 1991.
US births per 5-year period, 1990βpresent (SSA data).