You mean besides Piketty, Stiglitz (Nobel), and Krugman (Nobel)?
* https://www.cnbc.com/2020/09/17/economists-stiglitz-and-pike...
* https://twitter.com/paulkrugman/status/1088529094478872578
While I'm sure he's good in his specialty, it seems like Cochrane does not understand macroeconomics and how debt-financed government spending works:
* http://krugman.blogs.nytimes.com/2009/01/27/a-dark-age-of-ma...
* http://krugman.blogs.nytimes.com/2010/02/23/brad-delongs-foo...
Further, I'm curious to know if he did a survey of economists to substantiate his claim of "no economists". Besides the three prominent ones mentioned above, there seems to be ongoing research on the subject and so it is hardly a settled matter:
* https://www.brookings.edu/blog/up-front/2019/09/05/estimatin...
* https://www.nytimes.com/2020/02/21/us/politics/the-liberal-e...