Gaelle sits next to 4 phonetic neighbors — Gael, Gayle, and Ella are the closest matches by sound. Most share Gaelle's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Gaul, Celt (person of Celtic origin)"
"lily flower"
"festival of roses"
"Beloved, wished for"
"of Julius Caesar, July month"
"youthful, devoted to Jupiter"
"the other Aenor (origin of Provençal form)"
"dry, parched"
"pure, beloved"
"spiritually reborn through baptism"
"new beginning"
"radiant, shining"
"God is gracious"
"Dark one, black-haired"
"who is like God"
"member of the Gauts tribe"
"God has favored me"
"innocence, gentleness (by extension)"
Similar sound: These names share phonetic patterns with Gaelle — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Breton origins, giving them the same cultural heritage as Gaelle.
Rhythm: Gaelle is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.