Sai sits next to 3 phonetic neighbors — Cy, Shy, and Jai are the closest matches by sound. Most share Sai's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"victory, prosperity"
"bright, radiant"
"an epithet of Lord Shiva"
"part of parents, beloved portion"
"to wander, traveler"
"announcement, proclamation"
"sacred primordial sound"
"the sun"
"ornament for the arm (anga = limb, da = of)"
"one who has accomplished their goal"
"Brave, heroic, valiant"
"blown out, extinguished (of desire)"
"conqueror, opener of doors"
"one with steady wisdom"
"magnificence, grandeur"
"one who follows noble conduct, righteous one"
"descendant of Raghu; epithet of Lord Rama"
Similar sound: These names share phonetic patterns with Sai — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Sai.
Rhythm: Sai is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.