Likely a modern variant of Kaia or Kailani
Kailaya is a contemporary American creation, likely blending the Hawaiian elements of names like Kailani with the popular 'aya' suffix. It may be interpreted as 'sea and sky' if linked to Hawaiian roots, or simply chosen for its melodic, multi-cultural sound.
Less common today
Kailaya isn't in the latest US Top 1000. It last peaked at #9,720 in 2018.
US births per 5-year period, 1990βpresent (SSA data).