Esti sits next to 4 phonetic neighbors — Essie, Estee, and Ettie are the closest matches by sound. Most share Esti's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"star (from Persian)"
"thankful, one whom God hears"
"reference to Our Lady of Nájera"
"gift of God"
"oak tree, terebinth"
"eye, vision; ancient, before"
"goddess of wisdom and warfare"
"beloved of God, of the sea"
"French diminutive feminine form of Ariel or Gabriel root"
"star"
"of the Gauts tribe"
"from the land of gold (Nub)"
"my God is an oath, pledged to God"
"type of spectacular tropical orchid"
"bright sword"
"feminine form of Darian/Darius"
"of Mars, belonging to the war god"
"grace, favor"
"my banner, my standard"
Similar sound: These names share phonetic patterns with Esti — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Persian via Hebrew origins, giving them the same cultural heritage as Esti.
Rhythm: Esti is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.