Brandon sits next to 4 phonetic neighbors — Brendan, Brayden, and Branden are the closest matches by sound. Most share Brandon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"broom-covered hill"
"God strengthens, strength of God"
"merciful, gentle"
"superlative of magnus (great)"
"steadfast, firm"
"wayside land, roadside settlement"
"protector of men"
"crowned with laurel"
"red earth, ground"
"courageous, valiant"
"cart driver, transporter of goods"
"highest point, citadel of Jerusalem"
"companion, friend, from Arabic Kadin"
"son of Cole"
"from Judah (the tribe)"
"from the valley of water"
"son of Owen"
"unity; the best; one"
"huntsman, pursuer"
"strength, manly beauty"
"gift of God"
Similar sound: These names share phonetic patterns with Brandon — 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 Brandon.
Rhythm: Brandon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.