Otis sits next to 4 phonetic neighbors — Otus, Otto, and Boris are the closest matches by sound. Most share Otis's Germanic cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"wealth, fortune"
"powerful leader of the folk"
"thankful, grateful"
"chief friend, noble friend"
"estate of the fifth son"
"selected, set apart, elected"
"queen's settlement"
"Lord (via Kyrie element)"
"Thor's stone"
"large gun, artillery piece"
"barn dweller, farm settlement"
"abundant, bountiful"
"gift of God, blessed one"
"gift from God"
"consecrated, increased"
"courageous heart"
"son of Walter"
"the number seven, representing luck and completeness"
"herb farm, meadow settlement"
"famous land, renowned territory"
"stone clearing, rocky glade"
Similar sound: These names share phonetic patterns with Otis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Otis.
Rhythm: Otis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.