I don't believe there is any universally accepted rankings.
NYU/GULC/UF are the three that have nationwide recognition.
Others have more regional draw. FWIW I am a graduate of Nova's LLM program, went there b/c I went to Nova LS and could start my LLM studies in 3L spring and finish a semester early. I think the program has a lot of potential, some well respected faculty there and it has helped me significantly in practice.