Blaine sits next to 4 phonetic neighbors — Blake, Lane, and Blaze are the closest matches by sound. Most share Blaine's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"yellow, golden"
"tournament fighter"
"crooked mouth, wry-mouthed"
"crooked nose"
"the sound"
"from Percy (Norman place name)"
"gift"
"seeing clearly, sharp-sighted"
"from the Denzell estate"
"place by the forest"
"birth, creation"
"chief, lord"
"free man"
"city of God (alternate interpretation)"
"meditation, absorption"
"treasure, to store (possible Arabic root)"
"just, righteous, equitable"
"may God protect"
"strong, upright"
"wealthy guardian, guardian of fortune"
Similar sound: These names share phonetic patterns with Blaine — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish/Gaelic origins, giving them the same cultural heritage as Blaine.
Rhythm: Blaine is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.