Shelly sits next to 3 phonetic neighbors — Shelby, Kelly, and Nellie are the closest matches by sound. Most share Shelly's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"meadow on a ledge"
"sky; clouds; atmosphere"
"noble, honorable"
"strong spear"
"victory peace"
"gentle rose, tender rose"
"dweller by the river"
"son of Piers, descendant of Peter"
"God is gracious"
"modern invented name"
"hay meadow, hay clearing"
"my God has answered"
"salty, of the sea"
"who is like God? (rhetorical, implying no one)"
"modern elaboration of Zora"
"waterfall, lake meadow"
"beautiful/God (Swahili + Hebrew blend)"
"fashionable, luxurious"
"cherry tree or fruit"
"mountain of strength"
Similar sound: These names share phonetic patterns with Shelly — 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 Shelly.
Rhythm: Shelly is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.