Rhaena sits next to 4 phonetic neighbors — Rena, Raina, and Reyna are the closest matches by sound. Most share Rhaena's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"queen, ruler"
"of or pertaining to birth"
"turban-shaped flower"
"God is my lord (El + Yah element)"
"may God protect"
"rose flower, love and beauty"
"beloved, precious"
"noble beauty"
"industrious beauty, working rose"
"beam of light and divine messenger"
"variant of Ailey, noble kind"
"bright, radiant"
"noble, of noble kind"
"rich, wealthy, prosperous"
"elf ruler, rules with elf wisdom"
"to give thanks, to be grateful"
"of noble kind"
"hoped for"
"fifth meadow (if from Latin quintus)"
"my, mine (beloved possession)"
Similar sound: These names share phonetic patterns with Rhaena — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh root rhen origins, giving them the same cultural heritage as Rhaena.
Rhythm: Rhaena is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.