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"
"great one (from Korean Tae root)"
"royal power"
"God has bestowed, gift of God"
"the new house"
"beauty, handsomeness"
"invented modern name"
"opening, window of light"
"drawn out of the water"
"son of Jack, God is gracious"
"new house, new home"
"dweller by the dark meadow"
"divine strength"
"son of Walter, ruler of the army"
"from the ancient city of Tyre"
"good change, positive transformation"
"variant of Terrell; earth puller"
"noble desire"
"heart, mind (from Hugh root)"
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.