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"
"renowned in battle"
"God will add, increase"
"little Cruz (endearment)"
"to overcome, to prevail"
"of Easter, of Passover"
"heavenly, of the sky"
"noble and bright"
"devotion to Our Lady of the Rosary"
"mountain goat, ibex"
"short form of Santiago (St. James)"
"short form of Gabriel"
"divine protection, helmet of God"
"of the mountain, from the mountain"
"heavenly, exalted"
"fingernail, claw"
"lord, my lord"
"house guardian, hall warden"
"God has given"
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.