Mecca sits next to 4 phonetic neighbors — Becca, Mika, and Neca are the closest matches by sound. Most share Mecca's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"place of gathering; sanctuary"
"peaceful bright one (combined Celtic/Swahili roots)"
"beautiful rose"
"lily flower"
"dew of heaven"
"safe harbor, place of refuge"
"wealthy guardian"
"dawn, bright star"
"prayer, peace"
"Ireland, abundant land"
"peace town"
"friend, beloved companion"
"place by the meadow"
"red-haired, reddish-brown"
"industrious, striving"
"his gift"
"raven bird, dark and intelligent"
"dear one, beloved"
"bright, shining light"
"beauty; radiance"
"stranger; guest (via Xenia)"
Similar sound: These names share phonetic patterns with Mecca — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Mecca.
Rhythm: Mecca is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.