Rayleigh sits next to 4 phonetic neighbors — Riley, Raleigh, and Hailey are the closest matches by sound. Most share Rayleigh's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rye clearing"
"sea and land"
"from the winding stream or lane"
"gracious gift"
"ash tree"
"of God, divine man"
"clover plant, good luck"
"town of the waters (French place name)"
"army man, soldier"
"of the estate"
"light"
"powerful in battle (alternate interpretation)"
"eternal ruler, ever powerful"
"precious, greatly valued thing"
"people's power"
"world ruler"
"people of warmth"
"eloquent, articulate (from Bayan)"
"the twin stars (Castor and Pollux)"
"fern plant (feathery frond)"
"yew warrior"
Similar sound: These names share phonetic patterns with Rayleigh — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Rayleigh.
Rhythm: Rayleigh is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.