Grettel sits next to 4 phonetic neighbors — Gretel, Greta, and Gretta are the closest matches by sound. Most share Grettel's German-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pearl"
"lord, master"
"noble woman"
"made of gold, golden"
"charcoal farm"
"descendant of Aodh (fire)"
"spiritual ecstasy"
"close to God, beloved"
"image, likeness"
"noble and kind"
"life, living"
"God is gracious"
"wealthy guardian"
"beautiful"
"wealthy"
"jasmine flower"
"flowing river"
"strong, aromatic wood"
"adored, beloved"
"to be of worth, valor"
Similar sound: These names share phonetic patterns with Grettel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via Latin via Germanic origins, giving them the same cultural heritage as Grettel.
Rhythm: Grettel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.