Can you share the list of Tier 1 or Tier 2 universities for admission to B.Tech after pursuing Diploma?

Hi, first of all there are 4000+ B.Tech college and in India, so listing them won't be easy. But I could provide you a way to find tier of college tier1 college are those who have high average package with decent infrastructure and great alumni network. 

Tier 2 college are those who have decent infra

If you've completed a Diploma and are looking to join a B.Tech program, several Tier 1 and Tier 2 universities in India offer excellent opportunities through lateral entry.  

In Tier 1 universities, IITs and NITs are top choices, though direct lateral entry isn't common. You can explore options like