Cleo sits next to 4 phonetic neighbors — Clio, Leo, and Theo are the closest matches by sound. Most share Cleo's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"glory, fame"
"free woman"
"broken land"
"pure, clean"
"saw-toothed ridge"
"woman from Magdala"
"shining light"
"queen, wife of the khal (warlord)"
"murmuring rock, ambush rock"
"bright, shining one"
"devoted to God"
"strong, manly"
"from France, Frankish"
"worthy of love, she who must be loved"
"rose flower"
"ancient, primordial"
"heavenly, exalted, high"
"beloved, favored"
"middle of the plain"
Similar sound: These names share phonetic patterns with Cleo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Cleo.
Rhythm: Cleo is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.