Can someone provide a list of where COVID-19 relief payments received should be included in 2020 taxes? Specifically, where CECRA and CEWS should go?

It depends on which income slip they are reported. They can be reported on a T4A slip or a T4E slip.

Please check this link for more information https://turbotax.intuit.ca/tips/what-to-know-about-covid-19-and-your-taxes-11110

I hope this was helpful