They have a cumulative deaths option on their Covid data (the link is scaled to population, there's a toggle for that on the graph header).

https://ourworldindata.org/explorers/coronavirus-data-explor...

The low China numbers prior to Omicron certainly seem to be a result of successful containment, I guess we will find out more over the next months about how Omicron goes (and whether they report it accurately).