Hilario sits next to 4 phonetic neighbors — Hilary, Mario, and Ilario are the closest matches by sound. Most share Hilario's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"cheerful, merry"
"beloved of God"
"strong as an eagle"
"from Milan, middle of the plain"
"rock, stone"
"kings, monarchs"
"gift of God's grace"
"champion, cloud"
"glorious power"
"strength of God"
"the beginning, the start"
"of the Fabian clan"
"God is gracious"
"blessed, happy"
"God will add; God will increase"
"lapis lazuli (the stone)"
"founder, first king"
"strong, enduring"
"from Sebastos (venerable city)"
Similar sound: These names share phonetic patterns with Hilario — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Hilario.
Rhythm: Hilario is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.