Alonzo sits next to 4 phonetic neighbors — Alfonso, Lorenzo, and Lonzo are the closest matches by sound. Most share Alonzo's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble and ready"
"God is gracious (via John/Zane)"
"of the gens Lucia (light)"
"traverser, one who crosses"
"bold counsel"
"God is my salvation"
"from the valley town"
"invented blend name, no classical meaning"
"fearless, not cowardly"
"distinguished, bright"
"wholehearted (short for Caleb from Hebrew)"
"thankful, God has heard"
"wealthy companion"
"famous brilliance"
"may God protect"
"God is gracious"
"son of Benedict/Benjamin"
"the greatest, superlative"
"at the ford"
"man, the light"
"wealthy guardian"
Similar sound: These names share phonetic patterns with Alonzo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Visigothic Germanic origins, giving them the same cultural heritage as Alonzo.
Rhythm: Alonzo is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.