Ousmane sits next to 3 phonetic neighbors — Osman, Usman, and Othman are the closest matches by sound. Most share Ousmane's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"form of Uthman, companion of the Prophet"
"divine approval, God's pleasure"
"may God protect"
"owner, possessor"
"shining light"
"to add, to augment"
"merciful, compassionate"
"steadfast, resolute"
"wise, having knowledge"
"father of many nations"
"fragrance, pleasant scent"
"darling, dear one"
"great praiser of God"
"God is salvation"
"praised one"
"servant of God"
"radiance, illumination"
Similar sound: These names share phonetic patterns with Ousmane — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Ousmane.
Rhythm: Ousmane is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.