Riana sits next to 6 phonetic neighbors — Rhiannon, Brianna, and Diana are the closest matches by sound. Most share Riana's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great queen, divine queen"
"princess, flower (associative with Zaria)"
"beautiful"
"The Lord is my God"
"pure, clear"
"quartz crystal"
"eternal life, vitality"
"beloved, star of the sea (Mary) + famous warrior (Lou)"
"anointed one"
"small, humble"
"harvester, reaper"
"resonant, pleasing sound"
"day's eye (the flower)"
"noble lady, bread-kneader"
"old friend, trusted companion"
"white and smooth"
"serenity, harmony"
"beloved, wished-for child"
"to dance"
"clear, unsullied"
"pearl of the meadow (Mae + Aubrey blend)"
Similar sound: These names share phonetic patterns with Riana — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic/Welsh origins, giving them the same cultural heritage as Riana.
Rhythm: Riana is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.