Geno sits next to 4 phonetic neighbors — Gino, Jeno, and Gino are the closest matches by sound. Most share Geno's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"well-born, noble"
"short form of Matthew"
"high, enlightened"
"head, chief (as in penultimate)"
"the color blue, sky and sea"
"thunder warrior, thunder bear"
"God is gracious"
"dark, black-haired"
"beloved, dear one"
"gift of splendor, bounty"
"grandfather"
"blooming, flourishing"
"supplanter"
"one who throws, thrower"
"charcoal merchant, coal worker"
"from Devon, the deep valley people"
"raven, dark one"
"calm, tranquil"
"little slender one"
"horseman, cavalryman"
"flat-topped hill settlement"
Similar sound: These names share phonetic patterns with Geno — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Italian origins, giving them the same cultural heritage as Geno.
Rhythm: Geno is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.