Bo sits next to 4 phonetic neighbors — Beau, Joe, and Moe are the closest matches by sound. Most share Bo's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"to live, to dwell"
"spear rule"
"Yahweh has shown favor"
"first, chief"
"ever ruler, eternal king"
"modern American coinage, son of Case"
"God is my judge (variant of Daniel)"
"Yahweh is merciful"
"traveler, one who leaps"
"son of David"
"without wax (pure, unflawed)"
"settlement of the raven's people; raven-town"
"descendant of the sun god"
"God is gracious"
"settlement near the coal"
"from the bridges"
"true, faithful"
"descendant of Grádaigh"
"descendant of the red-haired one"
"modern American creation"
Similar sound: These names share phonetic patterns with Bo — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Bo.
Rhythm: Bo is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.