I think coming from Tandon you still have a chance. Do you have research experience (or working towards publication(s))? From what I've seen, publications can offset school ranking. For example, I got into UCSB for their PStat PhD program whereas a fellow classmate at Columbia (yes, I declined UCSB but it was a super hard choice to make) who came from UC Berkeley didn't. Main reason was because I had one publication and he had none.
I'd put Cornell ORIE in the same tier as those OR PhD programs
@dangtransontung mentioned above. Berkeley IEOR maybe a tiny, tiny bit lower--this is actually coming from a Columbia IEOR prof who did his PhD at Berkeley and Postdoc at Cornell, but I never asked why. Frankly, I don't think the difference is significant enough to fuss over. I'd be damn happy to get into either...
I think UMich, GaTech and UW-Madison have pretty damn good OR programs (one Columbia IEOR prof got his PhD from GaTech). I'm also adding Rutgers here mainly because of Andrzej Ruszczynski; however, a
big drawback with this PhD program is they don't offer funding to everyone, so I'm not sure if it's worth it.
Obviously there's other OR programs out there in the US, but I'm less familiar with those ones and you can expect that the lower ranked the PhD OR program, the lower the quality of your peers, i.e., fellow PhD students--not saying all the PhD students you'd encounter would be crappy, but expect a nontrivial number.
In general, I would say obviously everyone wants to go to the top OR PhD programs, but slightly lower ranked PhD programs where there's a superstar supervisor, e.g., Andrzej Ruszczynski, (assuming you get funding ofc) are still worth it.
And again, this is just my opinion based on talking to profs and going through the application processes. I would also check LinkedIn to see where the PhD graduates are (either in academia/industry).