Clifton sits next to 4 phonetic neighbors — Clinton, Clayton, and Clifford are the closest matches by sound. Most share Clifton's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"cliff settlement"
"supreme ruler"
"rim of a shield"
"woodland clearing used for hunting"
"lion strength"
"sun, sunshine"
"saint of God, blessed by God"
"one who saves, rescuer"
"invented name; possibly son of the fearless one"
"son of Dubhagan (little dark one)"
"short form of Orlando, famous land"
"dweller at the untilled ground"
"harp player, one who plays the harp"
"faithful man, loyal man"
"young warrior"
"farmer, estate steward"
"famous ruler"
"row of trees by the wood"
Similar sound: These names share phonetic patterns with Clifton — 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 Clifton.
Rhythm: Clifton is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.