Aragorn sits next to 4 phonetic neighbors — Aedan, Aragon, and Argor are the closest matches by sound. Most share Aragorn's Sindarin Elvish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble valor, kingly"
"bold king, royal ruler"
"God is my strength, helped by God"
"precious, anointed"
"invented American name, likely a blend of Cash and Ashton"
"pure, clean, blessed"
"Comfort and consolation in times of distress"
"personal royalty, regal one"
"bird catcher, fowl hunter"
"new house (via Xavier)"
"distinguished one"
"mountain village; reason of the mountains (Japanese interpretation)"
"from Colt's farm"
"thankful, God has heard"
"entertainer, companion in evening conversation"
"gift of healing"
"valley of Wendel"
"cheerful, bright, happy"
"of the angel, from Angelo's family"
"may God protect"
"long hill, ridge settlement"
Similar sound: These names share phonetic patterns with Aragorn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sindarin Elvish origins, giving them the same cultural heritage as Aragorn.
Rhythm: Aragorn is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.