Supplanter or right hand of favor
Jamian is a rare modern elaboration, likely formed by blending the Hebrew name James with the suffix -ian, or as a variant of the Arabic name Jamian. It carries the traditional meaning of 'supplanter' from its Jacob roots, while also being associated with grace or favor in some linguistic interpretations.
Less common today
Jamian isn't in the latest US Top 1000. It last peaked at #4,272 in 2011.
US births per 5-year period, 1990βpresent (SSA data).