Covid has been in the US for about a year and killed over 500 000 people so we can approximate that to be about 500 000 in a year. The top 3 leading causes of death in the US in 2017 were heart disease (635 260), cancer (598 038), and accidents (161 374) [0]. That puts covid solidly in third place even if you assume the covid numbers are over counted. Heart disease and cancer accounted for over 20% of deaths each so that would make covid somewhere a little under 20% of deaths. Based on that, nearly 1 in 5 people who died in the last year in the US died of covid.
[0] https://www.healthline.com/health/leading-causes-of-death