Supplanter or one who follows
Jaimya is a modern American invention, likely created by blending the traditional name Jamie with the popular 'ya' suffix. As a derivative of James, it ultimately traces back to the Hebrew name Jacob, which refers to one who follows or 'supplants'.
Less common today
Jaimya isn't in the latest US Top 1000. It last peaked at #10,607 in 2008.
US births per 5-year period, 1990βpresent (SSA data).