Tej sits next to 3 phonetic neighbors — Taj, Tejas, and Dev are the closest matches by sound. Most share Tej's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"brightness, radiance, splendor"
"one who destroys evil (name of Shiva)"
"moon, luminous, shining"
"indestructible, eternal, imperishable"
"king and hero"
"good, excellent + blue"
"little Hasan (diminutive of good)"
"Mother Earth personified"
"having the quality of sattva (clarity, harmony)"
"auspicious, blessed"
"flourishing, long-lived"
"love, pure affection"
"clever, perceptive"
"ray of light, particle of radiance"
"of the mountains, highland"
"devoted, pious"
"offering, tribute, sacrifice"
"Canopus star, bright star"
Similar sound: These names share phonetic patterns with Tej — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Tej.
Rhythm: Tej is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.