Jayna sits next to 4 phonetic neighbors — Jaina, Jayne, and Jana are the closest matches by sound. Most share Jayna's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"halo of light"
"fine flour"
"joy, gladness"
"from the north, northman"
"alone, solitary"
"the great one, exhilarating"
"petite and feminine (French diminutive)"
"of the Aelian family"
"divine, celestial"
"brightness, fame"
"wry meadow"
"bright meadow (Z + leigh/leah)"
"fellow countrymen"
"epithet of Lakshmi"
"flowing water"
"fair and smooth, white and soft"
"from Zaria, princess of the city"
"she was (past tense)"
"bright, shining light"
Similar sound: These names share phonetic patterns with Jayna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Jayna.
Rhythm: Jayna is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.