Kassidy sits next to 4 phonetic neighbors — Cassidy, Kassie, and Lacidy are the closest matches by sound. Most share Kassidy's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"curly-haired, descendant of Caiside"
"my God is abundance"
"manifestation of God"
"stone of the side"
"full of life, vibrant"
"my God is the Lord (via Hebrew Elijah)"
"beautiful, lovely"
"white, fair, holy"
"friend"
"white island"
"abundance"
"blood red, vibrant red"
"who is like God? (none compares)"
"short form of Emma or Emilia"
"vine, climbing plant"
"little dark one, dark-complexioned"
"birch tree meadow"
"divine gift, consecrated one"
"weapon, mace"
"captivating, snare"
"sun"
Similar sound: These names share phonetic patterns with Kassidy — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Kassidy.
Rhythm: Kassidy is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.