The Lancet: Mortality rate between 2% and 9% January 24, 2020

https://unherd.com/thepost/imperials-prof-neil-ferguson-responds-to-the-swedish-critique/

who: Coronavirus death rate is 2.0% - 29 January 2019

https://unherd.com/thepost/imperials-prof-neil-ferguson-responds-to-the-swedish-critique/

CNBC: WHO says coronavirus death rate is 3.4% globally, higher than previously thought Mar 3 2020

https://www.cnbc.com/2020/03/03/who-says-coronavirus-death-rate-is-3point4percent-globally-higher-than-previously-thought.html

Professor Johan Giesecke, one of the world’s most senior epidemiologists, "The actual fatality rate of Covid-19 is the region of 0.1%" - 17 April, 2020

https://unherd.com/thepost/coming-up-epidemiologist-prof-johan-giesecke-shares-lessons-from-sweden/

Professor Neil Ferguson’s a British epidemiologist^[3] and professor of mathematical biology, "Maintains that UK infection-fatality rate is 0.8-0.9%"

https://unherd.com/thepost/imperials-prof-neil-ferguson-responds-to-the-swedish-critique/

Wold Atlas: The COVID-19 mortality rate varies from country to country. Spain, Italy, and the UK have high mortality rates over 10%, but rates will fall as more people are tested.

https://www.worldatlas.com/what-is-the-covid-19-mortality-rate.html