Frosty sits next to 4 phonetic neighbors — Rusty, Dusty, and Crusty are the closest matches by sound. Most share Frosty's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"covered in frost, icy"
"all-powerful, omnipotent"
"Open land, wide expanse; one who ranges freely"
"from the hall or manor house"
"of great stature, the great one"
"one who lives near a spring or who springs"
"invented name combining brightness with home"
"victory of the people"
"thunder, of Thor"
"narrow strait, channel"
"dear one, beloved by the pool"
"noble, high"
Similar sound: These names share phonetic patterns with Frosty — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English forst origins, giving them the same cultural heritage as Frosty.
Rhythm: Frosty is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.