Jeronimo sits next to 4 phonetic neighbors — Geronimo, Hieronymus, and Girolamo are the closest matches by sound. Most share Jeronimo's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"sacred name"
"dark one, man from the dark sea"
"wise protector"
"melody, song (mythological)"
"renowned counsel, wise advisor"
"crown, wreath of victory"
"honey, sweet"
"of love"
"Romantically associated with the poet Lord Byron meaning noble and ..."
"Yahweh is gracious"
"chalice, cup"
"dark red, crimson"
"one who works the earth"
"protector of mankind"
"divinely famous, famous through God"
"work of God"
"of the forest, wooded"
"magical, sacred water"
"crown, wreath"
Similar sound: These names share phonetic patterns with Jeronimo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Ancient Greek origins, giving them the same cultural heritage as Jeronimo.
Rhythm: Jeronimo is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.