Collie sits next to 4 phonetic neighbors — Coley, Colby, and Cole are the closest matches by sound. Most share Collie's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"dark-haired, coal-dark"
"God is my help"
"one who arrives, one who attains"
"from the holly clearing"
"brilliant fame"
"brave, bold beloved"
"innkeeper, host"
"God's love"
"bold voyager; brave in journey"
"short form of Guadalupe, Our Lady"
"all-seeing, vigilant"
Similar sound: These names share phonetic patterns with Collie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish English origins, giving them the same cultural heritage as Collie.
Rhythm: Collie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.