Halen sits next to 3 phonetic neighbors — Haylen, Helen, and Alan are the closest matches by sound. Most share Halen's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"salt"
"the immortal self"
"from the rust-colored estate"
"rock (from city of Tyre)"
"of the people (from Germanic Deutsch)"
"son of"
"little king, royal"
"fiery one"
"oak tree"
"little warrior, of Mars"
"surname used as first name"
"son of Hugh, spirit"
"defender (Greek mythological meaning)"
"third in line"
"path, narrow lane"
"nobleman, marquess, border guardian"
"may God protect"
"tail, conclusion"
Similar sound: These names share phonetic patterns with Halen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Halen.
Rhythm: Halen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.