Hermione sits next to 4 phonetic neighbors — Hermia, Harmony, and Heloise are the closest matches by sound. Most share Hermione's Greek-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"wellborn, of noble stock"
"truth"
"from Hadria (short for Adriaan)"
"God's resting place, place of brightness"
"sunny, full of sunshine"
"light, bright, shining"
"noble, of noble kind"
"citadel, fortress"
"heavenly, celestial"
"sight, vision"
"I see the sun, sun goddess"
"feminine elaboration of George"
"the other Aenor / bright one"
"peaceful one"
"beautiful"
"aunt"
"sapphire, the blue gemstone"
"beloved"
"modern Welsh elaboration"
Similar sound: These names share phonetic patterns with Hermione — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Hermione.
Rhythm: Hermione is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.