Tiger sits next to 3 phonetic neighbors — Tyler, Tyger, and Tigger are the closest matches by sound. Most share Tiger's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"the great beast, tiger"
"sacred songs, hymns of praise"
"sea/pure/rejoice (Kai) + son of (-sen)"
"creative blend: Ja + Shawn (God is gracious)"
"handsome, beautiful"
"sea, ocean (from the Kai element)"
"dwellers in wooded hills"
"charming scoundrel, lovable rebel"
"battle warrior, army in battle"
"little battle, warrior spirit"
"God is gracious"
"manly, brave, strong (via Andre/Andreas)"
"born of laughter, joy"
"promised by God"
"supplanter, he who follows at the heel (as Jacob)"
"land beside the road"
"creative spelling of Legend (things to be read, from Latin legenda)"
"energy, spirit, vigor"
"little fire"
"possibly derived from Jason (healer) via phonetic alteration"
"from the Cassius Roman family clan"
Similar sound: These names share phonetic patterns with Tiger — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek origins, giving them the same cultural heritage as Tiger.
Rhythm: Tiger is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.