Likely a modern combination of Kayla and Alaya
Kahlaya is a contemporary American invention, likely created by blending the popular name Kayla with the rhythmic suffix -laya. While it does not have a singular ancient etymology, it draws phonetic influence from Hebrew and Sanskrit roots found in its component parts.
Less common today
Kahlaya isn't in the latest US Top 1000. It last peaked at #10,408 in 2019.
US births per 5-year period, 1990βpresent (SSA data).