Lonnie sits next to 4 phonetic neighbors — Donnie, Ronnie, and Connie are the closest matches by sound. Most share Lonnie's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble and ready"
"of the royal dynasty"
"wild garlic island"
"courageous, valiant"
"friend, ally"
"beloved youngest son"
"son of Ed, son of the wealthy guardian"
"surname derived from topographic ridge"
"God is gracious"
"fair-skinned, son of the fair one"
"sun, sunshine"
"from the hazel tree settlement"
"servant, worshipper of God"
"modern invented name, valley dweller (from -den suffix)"
"boar-friend, warrior companion"
"courageous, bold, daring"
"ruler of peace"
"fortified place, protection"
"from the forest, woodland dweller"
"short form of Orlando, famous land"
"son of Evar; son of the boar"
Similar sound: These names share phonetic patterns with Lonnie — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Lonnie.
Rhythm: Lonnie is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.