Clifton sits next to 3 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
"settlement on a cliff"
"red, reddish"
"possibly related to Ursula (little bear)"
"rosy-cheeked, bright"
"contemplation, observation"
"well-born, noble (from Eugenia)"
"elder tree forest"
"beloved"
"exalted one, high goddess"
"shining glory"
"wading, crossing water"
"flower; blooming"
"gift of God"
"star of the sea, beloved"
"flower"
"pure, clean"
"star, stars"
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.