Majel sits next to 4 phonetic neighbors — Hazel, Mabel, and Marvel are the closest matches by sound. Most share Majel's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"from Maiella, a mountain region in Italy"
"good, excellent"
"little bird"
"grace, favor (from Anna)"
"coal black, dark-complexioned"
"fair, smooth"
"elf-friend, friend of elves"
"diminutive term of endearment"
"invented blend of classical sounds"
"fortune, riches"
"Possibly a diminutive of Genoveva (noble woman) or variant of Janel..."
"king"
Similar sound: These names share phonetic patterns with Majel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Italian origins, giving them the same cultural heritage as Majel.
Rhythm: Majel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.