Alenna sits next to 5 phonetic neighbors — Alena, Elena, and Alanna are the closest matches by sound. Most share Alenna's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bright, shining light"
"ash tree meadow"
"garden of holly"
"dispute, rivalry"
"new, fresh start"
"to please, gratitude"
"hazelnut"
"God is gracious, gift of God"
"protector, guardian"
"high meadow, bright clearing"
"God is gracious (via John → Jack)"
"boomerang (curved throwing stick)"
"lake or stream (suffix)"
"noble, exalted, powerful"
"bee, to speak in words"
"heavenly, sky"
"from the round hill"
"exalted, high, ascending"
"one who lives near a brook"
"lake, water (from Lynn)"
"basement, storage room manager"
Similar sound: These names share phonetic patterns with Alenna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Alenna.
Rhythm: Alenna is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.