Negan sits next to 3 phonetic neighbors — Megan, Regan, and Logan are the closest matches by sound. Most share Negan's American-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"invented modern name, no established meaning"
"serious, sincere, determined"
"God appears (Theo-phania)"
"place name origin: a hundred in Cornwall, England"
"ancient, enduring"
"of noble lineage"
"God will uplift, God will exalt"
"beloved son"
"like a lion, of Leon"
"woodland settlement"
"modern invented name combining Ryan and Ivan roots"
"bridge town"
"God is salvation, Yahweh saves"
"modern American creation"
"God is gracious"
"wolf shield"
"street"
"fire of God"
"king, supreme ruler"
"French form of James/Jacob"
"one who brews or creates"
Similar sound: These names share phonetic patterns with Negan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have American origins, giving them the same cultural heritage as Negan.
Rhythm: Negan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.