Comparing the fundamentals, you should go for NMIMS. Firstly because RGIT is recognized under the University of Mumbai and there are several institutes under the same university that follow the same curriculum. It impacts the recruiting process.

On the other hand, NMIMS is deemed to be a university and is established under the act of UGC, helping it make the rules and regulations quite a lot flexible to any upcoming changes in accordance with the industrial standpoint.

It technically means that they are exposed to variation in course patterns as per the industrial standards. The stats of both institutes are as mentioned below,

These are recent stats of both institutes that might help you differentiate. Hope this helps you.