Here are simple Jain-friendly boy names that reflect thinking, calmness, kindness, and happiness, with their meanings:

• Shantanu — meaning calm, peaceful.
• Manan — meaning contemplation, thoughtful thinking.
• Siddhant — meaning principle or doctrine; suggests thoughtful, principled thinking.
• Dayal — meaning compassionate, kind-hearted.
• Anand — meaning bliss, happiness; conveys a cheerful nature.
• Karunesh/Karun — meaning compassionate, kindhearted.

If you’d like, I can suggest more options or tailor the names to a particular syllable count or starting letter.