Alanna sits next to 3 phonetic neighbors — Alana, Lanna, and Elena are the closest matches by sound. Most share Alanna's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little child; dear child (endearment)"
"tailor, cloth-cutter"
"princess, noblewoman"
"magnolia flower"
"sunlight, beam of light"
"live coal, smoldering fire"
"young attendant to a knight"
"harmony, peaceful, beautiful"
"the moon"
"courageous, valiant"
"free man"
"torch, the bright one"
"bright, shining light"
"divine grace"
"jasmine flower"
"goddess of wisdom and warfare"
"diminutive of Harriet (home ruler)"
"marvel, object of wonder"
"oak tree clearing"
"entire, all-encompassing"
"clear (as in clear skies)"
Similar sound: These names share phonetic patterns with Alanna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Alanna.
Rhythm: Alanna is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.