here are simple Jain-informed observations about each name and a practical pick:

• Aditya

- Meaning: sun; brightness and vitality. - Jain perspective: a positive, auspicious name with a clear good-energy connotation. Easy to pronounce across languages.

• Dhyan

- Meaning: meditation, contemplation. - Jain perspective: reflects a core Jain practice—meditation and inner discipline. Strong spiritual vibe.

• Siddharth

- Meaning: one who has attained his goal; accomplished. - Jain perspective: widely used in Indian culture, but not a traditional Jain Tirthankara name. It’s more strongly associated with other traditions (notably Buddhism in some contexts). Could be fine culturally, but it isn’t a canonical Jain naming tradition.

• Devansh

- Meaning: part of the divine; a portion of God. - Jain perspective: conveys a sacred, exalted sense of inner divine potential. Positive and elegant.

My practical pick (from a pure Jain-dharma standpoint)

• Aditya or Devansh are both excellent choices. Aditya is straightforward and universally accepted; Devansh emphasizes a divine quality. If you want a name that clearly signals inner practice and meditation, Dhyan is also beautiful.

If you’d like, tell me which meanings you prefer (brightness/vitality vs. inner meditation vs. divine essence), or whether you want a name that’s more traditional in Digambar, Swetambar, or a modern Jain community, and I can tailor the recommendation further.