Arleen sits next to 5 phonetic neighbors — Arlene, Arline, and Marlene are the closest matches by sound. Most share Arleen's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pledge, oath (possible Celtic origin)"
"beam of light"
"from the round hill"
"grace, eternal beauty"
"a voyage, a day's travel, life's path"
"thankful, God has heard"
"high chief, exalted one"
"victory"
"feminine form of John"
"beautiful as a dove, pure"
"descendant of the king"
"wisdom, protection"
"God is my strength, my God is high"
"salty, of the sea"
"friend, ally, those who are friendly"
"beautiful, harmonious, dear child"
"bright, shining one"
"gift of God"
"beloved, star of the sea (Mary) + famous warrior (Lou)"
"lei, garland, serene"
"land power, territorial might"
Similar sound: These names share phonetic patterns with Arleen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic 'Arlen' origins, giving them the same cultural heritage as Arleen.
Rhythm: Arleen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.