Hello student some of the best job orinted diploma courses of Post Graduate level are mentioned below :-
1)Diploma in environmental studies
2)Diploma in Paithani handicraft and Modern Garments
3)Yuvodaya
4)Diploma in achieves keeping
5)Certification in finance and Accounts
6)Diploma in Educational Technology
7)Diploma in Instructional Design
8)Diploma in chemo Informatics
9)Retail Management Programme
10) Diploma in Radio jockey

For more updates on diploma courses please refer the link mentioned below
https://www.google.com/amp/s/university.careers360.com/articles/20-diploma-courses-get-you-job/amp

Feel free to comment if you have any doubt
Good luck