Thane sits next to 3 phonetic neighbors — Shane, Theron, and Wayne are the closest matches by sound. Most share Thane's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lord, warrior who holds land by military service"
"divine peace, God's peace"
"speckled, or from the bridge settlement"
"land by the road"
"invented modern blend name"
"round, barrel"
"God is gracious (via Hans/John)"
"wealthy guardian"
"modern blend name"
"of the Titans, giant"
"God has heard"
"little fire, flame"
"oak grove"
"sun ray, luminous"
"son of Thomas, son of the twin"
"aromatic spice from nutmeg"
"Carl's town or farm"
"modern variant of Aeson (healer)"
"crowned one"
"dark complexion"
Similar sound: These names share phonetic patterns with Thane — 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 Thane.
Rhythm: Thane is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.