Rashell sits next to 3 phonetic neighbors — Rachel, Rachelle, and Rochelle are the closest matches by sound. Most share Rashell's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ewe, female sheep"
"child of May, springtime"
"lathe worker, one who turns wood"
"thunder and lightning"
"bright, shining"
"courageous, valiant"
"rose festival"
"light, radiance, brilliance"
"blind, sixth (via Cecilia)"
"supernatural power"
"spring of water, fountain"
"bright, clear, famous"
"invented modern name, lady of the hills"
"divine counselor"
"calm, peaceful"
"entire, all-encompassing"
"beloved, darling"
"immortal bird that rises from ashes"
"graceful wave, path of beauty"
"new light, new star"
"pearl"
Similar sound: These names share phonetic patterns with Rashell — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew Rahel origins, giving them the same cultural heritage as Rashell.
Rhythm: Rashell is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.