Thor sits next to 2 phonetic neighbors — Tor and Thore are the closest matches by sound. Most share Thor's Norse-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"thunder"
"God is good"
"island meadow, land near water"
"peak, summit, apex"
"cloud"
"increase, wisteria"
"resolute protector"
"gray valley, son of the gray one"
"step, stride"
"of the Titans, giant"
"son of Paye/Pace (son of Peace)"
"rider, horseman, mounted warrior"
"garden of hollies, holly garden"
"star-shaped flower"
"gift (modern American coinage)"
"to conquer"
"modern American coinage (rhyming name family)"
"white, silver (ancient root)"
"elm grove"
"light, radiance"
Similar sound: These names share phonetic patterns with Thor — 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 Thor.
Rhythm: Thor is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.