Keyleth sits next to 3 phonetic neighbors — Caeleth, Kaylee, and Caleth are the closest matches by sound. Most share Keyleth's Celtic-inspired fantasy-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"graceful, nature-connected"
"God is gracious"
"God is salvation (derived from Yoel/Joel)"
"beauty, handsomeness"
"bold warrior, warrior chief"
"manly, strong, brave"
"love (in Japanese feminine usage)"
"the West, where the sun sets"
"courtesy title for an adult man"
"resembling the bright one"
"from the branch, related to branches"
"modern invented name"
"son of Ty"
"rejoice; pure"
"modern compound: Mc (son of) + Aiden (little fire)"
"settlement by the leek plants"
"gift of God"
"bold king, royal ruler"
"from the deep valley (Devon region)"
"pure one"
Similar sound: These names share phonetic patterns with Keyleth — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic-inspired fantasy origins, giving them the same cultural heritage as Keyleth.
Rhythm: Keyleth is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.