Graydon sits next to 3 phonetic neighbors — Grayson, Grady, and Brandon are the closest matches by sound. Most share Graydon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from the gray hill"
"God is gracious (via Shaun)"
"descendant of Rian"
"from the ancient city of Tyre"
"God is gracious (via Sean/John)"
"western meadow"
"God is gracious (via Scandinavian John-family)"
"land by the winding stream"
"surname used as given name"
"supplanter, held by the heel (via Jake/Jacob)"
"glory of Hera"
"from the ash tree grove"
"young, heir (alternative)"
"variant of Terrell; earth puller"
"powerful (by association with the watt unit)"
"opening, window of light"
"from the lake"
"fire of God, God is my light"
"Yahweh is exalted"
"great tide, sea current"
"brother, friend"
Similar sound: These names share phonetic patterns with Graydon — 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 Graydon.
Rhythm: Graydon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.