Greg sits next to 3 phonetic neighbors — Craig, Brad, and Drake are the closest matches by sound. Most share Greg's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"watchful, alert"
"descendent of Andrew; virile"
"craftsman"
"beloved, dear"
"unique modern American name"
"people of the riverside forest"
"phonetic variant of Ryker"
"to glorify, worship, and give thanks to God"
"lucky, sacred number"
"respect, reverence"
"strength"
"ruler of the home"
"hill"
"choice, selection, that which is chosen"
"rope maker"
"shrine maiden"
"son of one with a bright mind"
"handsome, beautiful"
"gift of God"
"hunter's woodland"
"traveling salesman"
Similar sound: These names share phonetic patterns with Greg — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Greg.
Rhythm: Greg is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.