Reena sits next to 3 phonetic neighbors — Rina, Rena, and Leena are the closest matches by sound. Most share Reena's Hebrew-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"joyful song, joy"
"luck, fortune"
"slender, fair"
"sun, throne (Persian/Cyrus root)"
"eagle"
"variant of Lyra (Greek: lyre)"
"life, vitality"
"noble spear"
"luck, good fortune"
"life, vitality (possible Arabic root)"
"brilliant, radiant, resplendent"
"worthy of being praised"
"dark, honey"
"gift of God"
"whole, universal"
"strength of God"
"graceful, favored"
"high, noble"
"fifth meadow (if from Latin quintus)"
"victory ship, keel island"
"young deer"
Similar sound: These names share phonetic patterns with Reena — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Reena.
Rhythm: Reena is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.