Cobb sits next to 4 phonetic neighbors — Rob, Bob, and Cob are the closest matches by sound. Most share Cobb's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"rounded lump, cobblestone"
"noble, bright"
"renewed in spirit"
"eminence, hill"
"broad fortified settlement"
"lean, thin one"
"fond of horses"
"rock, crag, cliff"
"powerful warrior"
"adventurous, wanderer"
"high, noble"
"noble, of noble type"
"grey, grey-haired"
"paulownia tree, nobility (桐)"
"chubby, stout little one"
"shield wolf (derived from Randy/Randolph)"
"friend (invented by J.M. Barrie from 'fwendy')"
Similar sound: These names share phonetic patterns with Cobb — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Cobb.
Rhythm: Cobb is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.