Arla sits next to 3 phonetic neighbors — Arlen, Harlan, and Carl are the closest matches by sound. Most share Arla's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"eagle"
"raven"
"sunray, shining light"
"glory of the homeland"
"24-hour period"
"from the flowering place"
"loving, affectionate (if from Philemon)"
"elder counsel"
"olive tree; symbol of peace and wisdom"
"life, grain"
"from the alder grove"
"black and blue-green"
Similar sound: These names share phonetic patterns with Arla — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Arla.
Rhythm: Arla is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.