Kelly sits next to 4 phonetic neighbors — Kelley, Kelli, and Kellie are the closest matches by sound. Most share Kelly's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"frequenter of churches"
"rose garden"
"maiden, girl"
"rhythm, musical flow, beat"
"renowned in battle"
"manifestation of God"
"little bird"
"curly-haired, descendant of Caiside"
"torture (early Greek form Aikaterine)"
"joy, song"
"youthful, downy-bearded"
"little"
"ancient, primordial"
"oarsman, rower"
"advisor, counselor"
"free man, free woman"
"consecrated, honored"
"dream, vision"
"hillside lake"
"woman from Magdala, high tower"
"God is gracious"
Similar sound: These names share phonetic patterns with Kelly — 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 Kelly.
Rhythm: Kelly is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.