Hey,
As there are a number of NIT'S  in India, some are top NIT'S some are average and some are below that as well. So when it comes to rankings they are ranked individual not just by NIT name. So they have a huge difference in their cutoffs. So it wont be possible to show you every NIT'S cutoffs but for some main NITs I'm providing you the link. You can check their cutoffs on the following link:

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-cutoff-for-top-nits/amp

Hope this solves your query.


Good Luck!!