Rey sits next to 3 phonetic neighbors — Ray, Rae, and Rei are the closest matches by sound. Most share Rey's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"king, royalty"
"gift of God"
"bright, radiant"
"pure"
"breath of life"
"from Kay and Lee combination"
"victory of the people"
"God is gracious"
"honor, compassion"
"shape-shifting water spirit"
"festive occasion, day of rest"
"princess, noble one (Sara variant)"
"wreath of honor, victors crown"
"heavenly, sky, royal"
"God is gracious"
"royal child of heaven"
"noble, of noble kind"
"resurrection, she who will rise again"
"eternal, forever"
"Scottish pet form of Margaret"
Similar sound: These names share phonetic patterns with Rey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Rey.
Rhythm: Rey is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.