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"
"gallant, accomplished"
"beautiful, lovely"
"new house, bright"
"gentle, beautiful"
"light"
"lake or stream (suffix)"
"may God protect"
"victory of the people"
"compound of grace and flower"
"sea village"
"yellow, fair-haired"
"of the Romilly family, Norman nobility"
"princess, radiant one"
"divine, heavenly (implied)"
"narrative, narration"
"delicate, languishing"
"heavenly life, new life"
"blessing, unmerited favor"
"from the round hill"
"God has healed"
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.