Doubt I've seen this posted here but I found a nice research paper about excess deaths in many countries. There's also a nice table included.
https://elifesciences.org/articles/69336
Shame there's no data for Turkey as I expect that to be heavily undertracked. Many East European, Central Asian and Latin American countries seem to have much higher excess deaths than their official Covid data would lead you to believe. But also countries like Egypt (13 times higher excess deaths than reported Covid deaths) and South Africa (almost 3 times more) show quite a discrepancy.
some "highlights":
Egypt: reported: 6.6k | excess: 87k
Mexico: reported: 220k | excess: 470k
Poland: reported: 75k | excess: 120k
Russia: reported: 110k | excess: 500k
South Africa: reported 60k | excess: 160k