Shepard sits next to 4 phonetic neighbors — Shepherd, Sheppard, and Spencer are the closest matches by sound. Most share Shepard's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"shepherd, one who tends sheep"
"work and power combined"
"tile maker, one who tiles"
"cloud"
"yellow, golden"
"see, a son is born"
"belonging to the immortals"
"wolf"
"God has remembered"
"young warrior, free man"
"God is gracious (via James/Jacob etymology)"
"crooked mouth, wry-mouthed"
"son of the cloud"
"noble, handsome"
"stammering, lisping"
"son of James"
"companion, fellow traveler"
"one who thatches roofs"
"aspen tree, quaking poplar"
"son of Cole"
"at the holly trees"
Similar sound: These names share phonetic patterns with Shepard — 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 Shepard.
Rhythm: Shepard is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.