Bryan sits next to 5 phonetic neighbors — Brian, Ryan, and Byron are the closest matches by sound. Most share Bryan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"noble Roman citizen"
"child"
"bowman, archer"
"little battle"
"descendant of the red-haired one"
"treasurer, bringer of treasure"
"rich, powerful"
"son of the valiant one"
"father of many nations"
"divine healer"
"enduring, lasting"
"tile maker, brick layer"
"keeper of the pantry"
"lives near reeds"
"strong, virtuous"
"Finnish person, Norseman"
"beauty, adornment, grace"
"place of elms"
"thunder god"
Similar sound: These names share phonetic patterns with Bryan — similar vowel sounds, consonant clusters, or rhythm.
Rhythm: Bryan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.