Jean sits next to 4 phonetic neighbors — Jane, Joan, and Gene are the closest matches by sound. Most share Jean's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"phonetic initialism (J.C.)"
"well-spoken, of good repute"
"lake colony, pool settlement"
"God is gracious"
"from Laurentum, laurel place"
"heavenly day, sky-bright"
"beautiful, lovely"
"lioness, lion-hearted"
"one, unity"
"feminine form of Charles"
"independent, one of a kind (Maverick root)"
"sun"
"king's meadow, woodland clearing of the king"
"of noble kind, noble birth"
"sun goddess, solar"
"flowing river"
"high tower"
"of great value, beloved, cherished"
"May God protect"
Similar sound: These names share phonetic patterns with Jean — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via French origins, giving them the same cultural heritage as Jean.
Rhythm: Jean is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.