Kingsley sits next to 3 phonetic neighbors — Kinsley, Kingston, and Bradley are the closest matches by sound. Most share Kingsley's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"king's meadow, king's clearing"
"awareness, understanding, learning"
"land of purple dye"
"watchful, vigilant (via Casey)"
"leek farm village"
"of the raven, raven-like"
"God is gracious (via John)"
"panache, flair (as in 'cut a dash')"
"shield wolf, protector"
"one who catches fish"
"divine reward (alternate interpretation)"
"God is gracious"
"highest point, God's place"
"carrier, one who bears"
"genuine, authentic, honest"
"from the river Blaan"
"stellar explosion, burst of light"
"love, passion transformed"
"long stone settlement"
"one who works a lathe, craftsman"
"son of Edie (son of Edward)"
Similar sound: These names share phonetic patterns with Kingsley — 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 Kingsley.
Rhythm: Kingsley is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.