The difference in the numbers is that FHM publish by the date people actually die, or are reported to have died. So when you see the next set of numbers past days may be adjusted upwards.

Worldometer goes by date of announcement of the number. With the Swedish reporting system, where weekend fatalities tend to get delayed in the reporting, it gives some troughs and peaks that does make Mondays and Tuesdays look more dramatic, but in the end the numbers are the same.