Supplanter
A modern American creation likely blending the classic name James with the popular '-ikia' suffix. It shares the etymological roots of James, which is derived from the Hebrew name Jacob, meaning one who follows or supplants.
Less common today
Jamekia isn't in the latest US Top 1000. It last peaked at #4,627 in 1993.
US births per 5-year period, 1990βpresent (SSA data).