Rey sits next to 4 phonetic neighbors — Ray, Rei, and Rae 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"
"people's power"
"great one"
"land of Eoghan (short for Tyrone)"
"generous, noble, honorable"
"high, noble"
"whole, universal, powerful"
"crooked valley"
"queen's settlement"
"all guardian, protector of all"
"western settlement"
"ray of light, bright counsel"
"God is gracious"
"man, warrior"
"tournament fighter"
"agreement to stop fighting, temporary peace"
"king's meadow, king's clearing"
"source of joy"
"son of Otto"
Similar sound: These names share phonetic patterns with Rey — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Spanish 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.