Paislyn sits next to 4 phonetic neighbors — Paisley, Paislee, and Roslyn are the closest matches by sound. Most share Paislyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"grace, favor"
"the very first, the beginning"
"grace, God's favor"
"heavenly flower of the sea"
"true, trustworthy"
"Brightness and grace; a name associated with light and elegance in ..."
"the crown desires"
"pearl"
"auspicious one; blessed with divine grace"
Similar sound: These names share phonetic patterns with Paislyn — similar vowel sounds, consonant clusters, or rhythm.
Rhythm: Paislyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.