Floyd sits next to 4 phonetic neighbors — Lloyd, Boyd, and Roy are the closest matches by sound. Most share Floyd's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"anglicization of Welsh Llwyd"
"swift warrior"
"Great, magnificent, venerable"
"valley settlement"
"battle"
"born from the ocean, son of the sea"
"of the Cornelia family"
"the very greatest"
"famous warrior"
"powerful, energetic"
"new house, bright (via Xavier heritage)"
"bright color, vitality"
"of the field, strong"
"little wolf, little hound"
"steadfast, permanent"
"fortified camp, military settlement"
"peace"
"warrior, strong one"
"consecrated, sacred"
"those who are friendly"
"uncle"
Similar sound: These names share phonetic patterns with Floyd — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh origins, giving them the same cultural heritage as Floyd.
Rhythm: Floyd is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.