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"
"great river, wide flowing water"
"beloved (from David)"
"grey hill, army hill"
"son of the firebrand"
"heel, sharp point"
"raven-like, dark as a raven"
"counsel, power"
"noble lord"
"flame, fiery one"
"grace, beauty, ornament"
"God is gracious"
"wine and grain"
"fine, elegant"
"wealthy guardian"
"chariot boy"
"gentle, tamed"
"victory of the people"
"valley of the River Kent"
"one who pursues"
"divine, of Zeus"
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.