Hildur sits next to 4 phonetic neighbors — Hilda, Hildur, and Brunhilde are the closest matches by sound. Most share Hildur's Scandinavian cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"battle"
"Sri (auspicious, prosperous) + anvi (one who follows the path of gr..."
"pearl"
"hope"
"heavenly, of the sky"
"moon"
"of the sorrows (religious title)"
"lover of horses"
"flowering, blooming"
"heritage, inheritance"
"gladness, delight"
"blind"
"victory of the people"
"related to Brahma, the creator"
"little one"
"Dweller at the marsh"
Similar sound: These names share phonetic patterns with Hildur — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Norse origins, giving them the same cultural heritage as Hildur.
Rhythm: Hildur is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.