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"
"clear, clean"
"Clear, famous"
"singing, melodious"
"Blue; sapphire; sky-colored"
"flowing one"
"strong and studious"
"from Ancy, dancing one"
"coined American name; likely from Keisha/Keziah (cassia tree)"
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.