Celso sits next to 3 phonetic neighbors — Kelso, Carlos, and Celsus are the closest matches by sound. Most share Celso's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"tall, lofty, elevated"
"the lord (divine title)"
"love"
"place of glamour and royalty (associative)"
"order, beauty, universe"
"the greatest, most excellent"
"Yahweh is merciful"
"supplanter, may God protect (Diego)"
"son of the lion"
"God is with us"
"to increase, to grow"
"protected by God"
"black banded gemstone"
"consecrated, revered"
"lion of man"
"gift of God"
"mountain goat, ibex"
"God is gracious"
Similar sound: These names share phonetic patterns with Celso — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Celso.
Rhythm: Celso is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.