Colleges in Delhi

Jaipuria Institute of Management should be your choice, if you wish to do PGDM in marketing management. First of all, the other names mentioned are not even in NIRF's top B-schools list for the year 2020. Of course, It doesn't mean that they are bad. Jaipuria Institute is in the list of top 75 B-schools of India. It is known for its academics, extra-curricular activities and placements. So, Jaipuria is an obvious choice.

Full time BBA from any reputed university is better than any private institution. One may prefer FOSTIIMA for PGDM/MBA but not for BBA.

AIU is not mandatory to run the PGDM program in India or for any Indian university. It's required only when any Indian university having a tie-up with foreign universities provides a foreign degree. Details can be checked from the AIU website https://www.aiu.ac.in/evaluation.php under, AIU ADVISORY FOR STUDENTS.

FOSTIIMA is AICTE accredited which is mandatory to run the PGDM programme. NAAC and NBA may add value to the college, but these are not at all mandatory to run this course. To check the status one may directly visit to AICTE website or can be referred at https://www.fostiima.org/aicte-approval-2020.php.

Hello Rishabh, engineering graduates with MBA in finance are indeed in great demand in the market place. There are lots of job openings. In addition DU has well oiled system for placements of students. So don't worry.
Best wishes to you.