Grantley sits next to 3 phonetic neighbors — Grant, Brantley, and Bradley are the closest matches by sound. Most share Grantley's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great woodland clearing"
"one island, isolated place"
"settlement on the rock, homestead"
"helpful"
"little salmon, little goad"
"invented modern name"
"knight of Jerusalem, Crusader hero (by association)"
"little warrior"
"spring of water, water gift"
"anointed one who carries"
"chance, good fortune"
"dweller by the open land"
"fortune; luck (in Spanish/Italian)"
"vast, expansive"
"gift of God"
"modern invented name"
"war, strife"
"God strengthens"
"decided, resolved, determined"
"beauty, grace (Arabic cognate Zayn)"
Similar sound: These names share phonetic patterns with Grantley — 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 Grantley.
Rhythm: Grantley is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.