Supplanter
Jocob is a rare variant of the name Jacob, which is derived from the Hebrew name Ya'aqov. It traditionally refers to the biblical patriarch who was born holding his twin brother's heel, symbolizing one who follows or replaces. While often a spelling error for Jacob, it is occasionally used as a distinct, unique variation.
Less common today
Jocob isn't in the latest US Top 1000. It last peaked at #3,941 in 1991.
US births per 5-year period, 1990βpresent (SSA data).