Gracious
Jaki is a diminutive form of Jack or Jacob, ultimately derived from the Hebrew name Yochanan. While often used as a nickname, it has emerged as a standalone name in various cultures, sometimes serving as a phonetic variation of Jacky.
Less common today
Jaki isn't in the latest US Top 1000. It last peaked at #4,642 in 2006.
US births per 5-year period, 1990βpresent (SSA data).