Jashan sits next to 4 phonetic neighbors — Jason, Jashon, and Yashan are the closest matches by sound. Most share Jashan's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"celebration, festivity"
"warner, one who cautions"
"grateful to God, one who praises"
"one who practices justice"
"king of gods, lord of heaven"
"approval, divine pleasure"
"of the sword"
"ruler, lord"
"auspicious, fortunate, blessed"
"thinking faculty, inner mind"
"worshipper of the generous God"
"inner, interior space"
"courageous hero"
"the greatest"
"modern invented name combining Ryan and Ivan roots"
"born on Thursday"
"king, sovereign"
"thunder, exalted"
"place of convergence, meeting point"
Similar sound: These names share phonetic patterns with Jashan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Persian jashn origins, giving them the same cultural heritage as Jashan.
Rhythm: Jashan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.