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"
"noble friend, elf friend"
"carried by God"
"Yahweh remembers"
"one who brings news"
"defender of men"
"dark-skinned, Moorish"
"the cleansing one"
"stone clearing, rocky glade"
"narrow, a strait"
"descendant of Flann (ruddy, red)"
"behold, a son"
"from the rocks"
"descendant of Madan (little dog)"
"God is gracious"
"king"
"bright fame"
"invented name, no established etymology"
"elder, more important"
"ruler, sovereign (from Julius Caesar's name)"
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.