Julien sits next to 4 phonetic neighbors — Julian, Jules, and Julien are the closest matches by sound. Most share Julien's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"youthful, downy-bearded"
"long hill, ridge"
"son of the victor"
"speckled, freckled"
"sun, lord"
"hollow, ravine"
"God has given"
"son of David"
"God is gracious (via John → Jack)"
"son of Will (William)"
"renowned warrior"
"ray of light, bright counsel"
"glory of the land"
"horse friend"
"illustrious through nobility"
"son of the right hand"
"land of Eoghan (short for Tyrone)"
"fallow land, uncultivated land"
"elder, more important"
"famous land"
"God is gracious"
Similar sound: These names share phonetic patterns with Julien — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Julien.
Rhythm: Julien is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.