Raina sits next to 4 phonetic neighbors — Reina, Rayna, and Rena are the closest matches by sound. Most share Raina's Slavic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"queen"
"gift, grace"
"mountain of whiteness"
"compassion, forgiveness, grace"
"pledged to God"
"rose + gentle (folk etymology)"
"diminutive of Margaret"
"knowledge, sacred wisdom"
"defender, helper of mankind"
"dream, vision"
"flat tropical grassland"
"little king"
"God is my joy"
"royal fortress meadow"
"sword, blade"
"strength, virtue"
"bright lake, shining pool"
"dark, black"
"ash tree meadow"
"real, authentic, not false"
"royal one, of royal blood"
Similar sound: These names share phonetic patterns with Raina — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Slavic origins, giving them the same cultural heritage as Raina.
Rhythm: Raina is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.