Hello Mt jain,

At present there is only one type of ews certificate for both state and central government admission or job necessities . It is issued by the respective state government you belong to on the basis of the eligibility criteria. Hence you should produce the latest EWS certificate  issued on or after 01-April-2020.

You may visit the below link to know more about the JoSSA counselling :

https://www.google.com/amp/s/engineering.careers360.com/articles/josaa-counselling/amp

All the best