Thayne sits next to 4 phonetic neighbors — Shane, Thane, and Blaine are the closest matches by sound. Most share Thayne's Scottish cluster, so the rhythm and vowel shape carry across the list.
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"warrior, military companion"
"red-haired, ruddy complexion"
"son of Hugh"
"chief hero"
"court officer, legal summoner"
"light, splendor, radiance"
"divine flame, light of the Lord"
"the Lord is salvation"
"beloved"
"one who bakes bread"
"handsome, distinguished"
"guardian of riches"
"word of God"
"God is gracious (via Scandinavian John-family)"
"one of the Goths"
"courage, bravery"
"pure"
"son of the renowned ruler"
"son of the wave, born of the sea"
Similar sound: These names share phonetic patterns with Thayne — 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 Thayne.
Rhythm: Thayne is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.