Julen sits next to 3 phonetic neighbors — Julian, Julien, and Jules are the closest matches by sound. Most share Julen's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"youthful, downy-bearded"
"at the mountain"
"tall, lofty, elevated"
"from Sebastia"
"little cross"
"God is gracious (from Yochanan)"
"new house"
"guardian of the estate, steward"
"most excellent, finest"
"Greek man"
"devotion to Our Lady of the Rosary"
"fingernail, claw"
"bright, splendid"
"god-helmet, protected by divinity"
"heavenly, of the sky"
"mountain goat, ibex"
"consecrated, revered"
"supplanter, may God protect (Diego)"
Similar sound: These names share phonetic patterns with Julen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin (Iulianus) origins, giving them the same cultural heritage as Julen.
Rhythm: Julen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.