Blayden sits next to 5 phonetic neighbors — Brayden, Jayden, and Hayden are the closest matches by sound. Most share Blayden's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"invented modern name, possibly blade-valley"
"swift as a deer"
"a legend, one destined for greatness"
"my air, my breath of life"
"one who follows"
"Supplanter (from Jacob/Jakob)"
"white, fair-haired"
"rising in the east; the hunter"
"first, beginning"
"fortified dwelling"
"God is gracious (via John)"
"counsel, advice"
"fire bearer, heat carrier"
"best, excellent"
"blue crested bird"
"little fire"
"continuous improvement, change for the better"
"modern nature compound name"
"pure, innocent"
"counsel wolf"
"Ella's town or estate"
Similar sound: These names share phonetic patterns with Blayden — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American English coinage origins, giving them the same cultural heritage as Blayden.
Rhythm: Blayden is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.