Roosevelt sits next to 3 phonetic neighbors — Rosevelt, Rosewald, and Rozeldt are the closest matches by sound. Most share Roosevelt's Dutch-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rose field, field of roses"
"one who burns, charcoal burner, distiller"
"holly tree"
"modern invented name"
"from Ludwig/Louis (via Swedish)"
"Yahweh is gracious"
"strengthened by God"
"spear, warrior"
"strong, powerful, prosperous"
"from Berlin (swampy area)"
"bright, shining, evident"
"God is gracious"
"modern invented name"
"of the night"
"rejoice, be happy"
"Italian form of Henry"
"battle, fighter, combatant"
"from the riverbank settlement"
"warlike, martial"
"Yahweh has helped"
"from Denmark, a Dane"
Similar sound: These names share phonetic patterns with Roosevelt — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Dutch origins, giving them the same cultural heritage as Roosevelt.
Rhythm: Roosevelt is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.