Ash sits next to 4 phonetic neighbors — Ash (unisex), Nash, and Cash are the closest matches by sound. Most share Ash's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"related to ash trees"
"bright, shining light"
"violent storm, tempest"
"seventh month"
"well-born, noble"
"beloved, gracious"
"hazelnut"
"pearl (via Mia/Maria)"
"innocent, unblemished"
"alive, living well"
"of noble birth"
"one who inherits (Latin root)"
"delicate, weak"
"amber jewel"
"lake maiden"
"dear ones"
"divine grace"
"modern African-American creation"
"from Syria, of Syrian origin"
"shape-shifting water spirit"
"red-haired"
Similar sound: These names share phonetic patterns with Ash — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Ash.
Rhythm: Ash is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.