from which ordering I should go ? in between them - CSE , CSE(AI), CSE(AI & ML), CSE ( Data science), IT , CSE (Internet of things ) ?
See from the perspective of Industrial needs Data Science is a urge in today's world. Many companies like TCS etc prefer in general CSE or other engineers for their programming jobs. CSE(AI) , CSE(ML and AI) have a great opportunity in future but after getting the degree there is a great probability that you will not get a job related to this but if you have interest you should go with it.
So ordering the course according to the industrial needs:
CSE(data science)/CSE>CSE(AI and ML)>CSE(AI)>IT
The perspectives will change from year to year on the enhancement in the sectors. So have a degree with advanced topics may not deal you now a great package perfectly for that course but in future it will be of high demand.
I hope my answer helps you. All the very best for your future endeavors!