Dear Anoop,
Based on the best practice from Adobe, you should create only one report for all your domains. Then based on the category/needed variables you can create Virtual Report Suites for usage.
But if there is necessity to create different report suites, you can dynamically set the report suite based on the URL Structure or with the help of any conditions you need.
To implement the same in DTM, under Adobe Tool, kindly check the below and make use of it.

Thank You
Arun