Jasier sits next to 3 phonetic neighbors — Javier, Jasir, and Yasir are the closest matches by sound. Most share Jasier's Arabic-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ease, wealth"
"from Courtenay (place in France)"
"Yahweh is gracious"
"exalted, noble"
"writing feather, quill pen"
"from Stockton"
"pure, without deception"
"one who lives by a stile"
"one who understands, expert"
"one who possesses, nest-maker"
"son of the twin"
"from Britain, a Briton"
"modern invented name"
"divine approval, God's pleasure"
"the sea belongs to God"
"slender, narrow"
"flower sound"
"creative American coinage"
"God is gracious"
"military commander"
"meadow by the stream"
Similar sound: These names share phonetic patterns with Jasier — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Arabic origins, giving them the same cultural heritage as Jasier.
Rhythm: Jasier is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.