Shaena sits next to 4 phonetic neighbors — Shana, Shayna, and Shane are the closest matches by sound. Most share Shaena's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"beautiful"
"river, flowing water"
"strong and studious"
"Bright and radiant"
"from Ancy, dancing one"
"coined American name; likely from Keisha/Keziah (cassia tree)"
"pure"
"Blue; sapphire; sky-colored"
"song of strength"
Similar sound: These names share phonetic patterns with Shaena — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Yiddish/German origins, giving them the same cultural heritage as Shaena.
Rhythm: Shaena is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.