Devon sits next to 4 phonetic neighbors — Devin, Devo, and Devon are the closest matches by sound. Most share Devon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"deep valley dwellers"
"Botolph's stone, settlement by the forest"
"riverbank with a windlass"
"supplanter, one who follows"
"sweet water, fair river"
"royal child of heaven"
"God is gracious (via Jane/John)"
"elf ruler, magical power"
"bright light"
"creative feminine form, unique identity"
"princess, noblewoman"
"Yahweh is gracious"
"striving, ambitious"
"great, venerable"
"star"
"beloved, esteemed"
"radiant one"
"divine, of the celestial realm"
"rose"
"gift, feminine grace"
"rising sun, radiant dawn"
Similar sound: These names share phonetic patterns with Devon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic origins, giving them the same cultural heritage as Devon.
Rhythm: Devon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.