Celestine sits next to 4 phonetic neighbors — Celestia, Celeste, and Celestina are the closest matches by sound. Most share Celestine's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"heavenly, of the sky"
"shining, bright"
"source of joy"
"purity, innocence"
"lake, waterfall"
"she who must be loved"
"garden of holly"
"feminine form of Simon"
"woman of Judea"
"the other Aenor"
"gift of God"
"God is with us"
"Amazon Star (astronomical)"
"farmer, earthworker"
"fidelity, eternal life"
"fairest, loveliest"
"from the city of Venice; the Veneti people"
"determined guardian"
"east settlement, east town"
"of the Jordan River"
Similar sound: These names share phonetic patterns with Celestine — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Celestine.
Rhythm: Celestine is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.