Penny sits next to 4 phonetic neighbors — Jenny, Benny, and Lenny are the closest matches by sound. Most share Penny's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"with a web over her face"
"queen"
"pure (via Kayla/Katherine association)"
"slender, slim and fair"
"strength, power"
"Cyneburg's field, royal forest clearing"
"beloved and gracious"
"from the town of Lassy in Normandy"
"from the green valley"
"wise"
"hollow, cauldron"
"child of light"
"sacred to Jove/Jupiter"
"from the Isle of Skye"
"gray battle maiden"
"dweller at the hall"
"bright fame, shining fame"
"the other, foreign (one)"
"water meadow dweller"
"free woman"
"heavenly garland, child of heaven"
Similar sound: These names share phonetic patterns with Penny — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Penny.
Rhythm: Penny is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.