Rena sits next to 4 phonetic neighbors — Rina, Reena, and Renata are the closest matches by sound. Most share Rena's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"song, joyful song"
"noble, patrician"
"rose or lily flower"
"olive tree"
"resemblance to the divine"
"beautiful, pleasant"
"speckled, freckled"
"short form of Vanessa (butterfly)"
"belonging to God, of God"
"industrious, striving, vigorous"
"star, radiant one"
"noble kind (short form of Alice)"
"protectress, lady"
"mountain of strength"
"one who resists authority, defiant"
"well-spoken, of good repute"
"lily, rose"
"flax clearing"
"delicate, dainty, languishing"
Similar sound: These names share phonetic patterns with Rena — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Rena.
Rhythm: Rena is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.