Jeyco sits next to 4 phonetic neighbors — Jayco, Gecko, and Jake are the closest matches by sound. Most share Jeyco's Modern American-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"possibly from Jay (victory) + -co (suffix)"
"a person from Yorkshire"
"crow woodland clearing"
"oarsman; counsel and power"
"clay settlement, clay farm"
"open clearing, approved passage"
"modern invented name, combining key + ori (melody)"
Similar sound: These names share phonetic patterns with Jeyco — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Modern American origins, giving them the same cultural heritage as Jeyco.
Rhythm: Jeyco is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.