Rheya sits next to 5 phonetic neighbors — Rhea, Rea, and Mia are the closest matches by sound. Most share Rheya's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"flowing, ease"
"object of wonder, divine sign"
"heavenly flower, lei of heaven"
"beloved"
"brilliant and pure"
"great, venerable"
"sweet water, fair river"
"wild cow"
"heavenly flower garland, heavenly child"
"God is salvation"
"modern American creation; jade-colored stone"
"God is gracious"
"Pleiades star cluster"
"bright, shining one"
"gentle one"
"cushion"
"royal residence, castle town"
"grace, favor"
"bright light"
"hazelnut"
"small, mighty songbird"
Similar sound: These names share phonetic patterns with Rheya — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Pre-Greek / Greek origins, giving them the same cultural heritage as Rheya.
Rhythm: Rheya is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.