What should be the order of choice for new IIMs, i.e. Ranchi, Trichy, Udaipur, Kashipur, Rohtak and Raipur?

Your choice of college depends on your personal preferences and interests. One college might be suitable for you but not for others. So your question is subjective and cannot be answered directly. 

Every individual ranks a college depending on his own perspective and goals.

I think the best way is to contact students or pass-outs from respective colleges, collect data and then make a decision based on your research and then your preference. You can also look up the official websites of the college to collect relevant data. Find out the parameters that matter to you the most in your choice of college. Some include placements, diversity, location, batch strength, or faculty. Do your part of the research and then choose the college that fulfills the maximum boxes in your priority list.