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"
"little Cruz (endearment)"
"my God is strength"
"noble and bright"
"God will add / God shall increase"
"companion, horse"
"to flow down, descend"
"lion-like, descendant of lions"
"god-helmet, protected by divinity"
"bird, free spirit"
"one born as a twin"
"mountain goat, ibex"
"God is my strength"
"God will add, increase"
"order, beauty, universe"
"lion of man"
"beloved one"
"consecrated, revered"
"youthful, downy-bearded"
"greatest conqueror"
"supplanter, may God protect (Diego)"
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.