Allena sits next to 5 phonetic neighbors — Elena, Alena, and Helena are the closest matches by sound. Most share Allena's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright, handsome"
"winding stream"
"beautiful, soft"
"descendant of the king"
"offering, awakening"
"creative blend, possibly from Jerome or Germany"
"dweller near the ash grove"
"victorious woman"
"strong spear"
"ewe plus waterfall"
"kiyari (traditional work chant)"
"life"
"beam of light"
"God has shown favor"
"beautiful, flourishing"
"defender of mankind"
"work, labor"
"grace, eternal beauty"
"artistic, impressionist"
"dark farm"
"chosen, cherished"
Similar sound: These names share phonetic patterns with Allena — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic/Old Breton 'Alain' origins, giving them the same cultural heritage as Allena.
Rhythm: Allena is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.