Gordon sits next to 3 phonetic neighbors — Jordan, Cordon, and Gordie are the closest matches by sound. Most share Gordon's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"great fort, spacious hill"
"always, at all times"
"beloved (from David)"
"to run fast, a burst of speed"
"tall like a palm tree"
"the island, island dweller"
"son of Judd"
"God is gracious"
"gift of God"
"faith, pledge"
"ash tree"
"God is gracious"
"boisterous, spirited, lively"
"one who lives near the fens or marshes"
"salmon"
"bright fame"
"descendant of Otto"
"slender, narrow"
"forest keeper, forester"
"dragon, serpent"
"village of the cross, farm by the cross"
Similar sound: These names share phonetic patterns with Gordon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish Gaelic/Brittonic origins, giving them the same cultural heritage as Gordon.
Rhythm: Gordon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.