Isidore sits next to 4 phonetic neighbors — Isadora, Theodore, and Salvador are the closest matches by sound. Most share Isidore's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"gift of Isis"
"father is exalted (earlier form Abram)"
"water meadow"
"great serpent, guardian"
"son of Talmai, son of the furrows"
"attendant at religious rites"
"handsome, beautiful youth"
"favored by God"
"ruler of the home"
"glorious power"
"fortunate, blissful"
"worthy of wonder"
"devoted to Demeter"
"blessed"
"of the night"
"lapis lazuli (the stone)"
"strength of God"
"my God is Yahweh"
"dark-haired one"
"God is the Lord"
Similar sound: These names share phonetic patterns with Isidore — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Isidore.
Rhythm: Isidore is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.