I'm told that Spain is one of the best examples of EPO abuse, yet within their own group of "non-African 5 continents" Spanish performances hardly stood out, let alone compared to the Africans.
I'm not sure what you count as the end of the EPO-era, but I also notice that these European records are all currently set by athletes of East African or North African descent, with the recent exception of Moen in the marathon, and old ones like Cram in the mile and 2000m.
Why so few, by so little, from five continents over almost three decades?
Huge decline in serious participation is the most likely answer for Europe at least. Despite that, every single European record from 1500m to Marathon was set during the EPO era. The depth in European distance running however did decline in the 1990s and 2000s.