Renton sits next to 5 phonetic neighbors — Renton, Benton, and Trenton are the closest matches by sound. Most share Renton's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"settlement on the River Ren"
"something deserved, virtue"
"resolute protector, determined guardian"
"of the elm tree, smooth stream"
"twin (loose association)"
"playful one"
"one who mows or cuts"
"God has remembered"
"from the branch, related to branches"
"Healer, one who cures"
"may God protect"
"possibly from Celtic 'avon' (river)"
"from Sebaste (via Sebastian)"
"word of God"
"from the fort (place name origin)"
"strong wind"
"fictional Fire Lord, invented name"
"dark or fair (dual origin)"
"from Airelle (place in Normandy, France)"
Similar sound: These names share phonetic patterns with Renton — 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 Renton.
Rhythm: Renton is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.