You are trying hard and at least you come up with links but unfortunately they are either old and out of date or just completely wrong. Also, calling people trolls if they have a different view is contrary to the rules here and usually means a weak argument is coming.
Mayo clinic link: June 6
Business Insider link: May 15
The opinion piece in USA Today is recent but appears to be written with an agenda as they leave out a lot of facts. Their biggest mistake is believing the estimate that less than 10% of Swedes have antibodies. Read this article at the NYT about antibody testing and you will understand things much better.
Your Coronavirus Antibodies Are Disappearing. Should You Care?
All three articles you cite make no mention of very recent T cell research which shows huge percentages of people (50-80%) having T cell cross immunity from previous exposure to other coronaviruses. The T cell immunity does not go away, they found it viable 17 years after SARS infections. This T cell immunity does not show up in an antibody test. It does show up in charts in places like New York and Sweden, where death and cases went up to a peak and then fell approaching zero, despite the fact that one place had lockdowns and masks and the other did not. Despite the fact that neither place had confirmed cases over 5% of their population. So far I have gotten zero comments that can explain this every time I post it.
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Comparing deaths rates and totals in different countries is more complicated than you think. Just because countries are neighbors does not mean they are comparable.
1. travel and tourism: Virus was seeded across the world by travelers. Places with more travelers from certain places got seeded with more virus. Sweden gets more travelers than Norway and Finland
2. How they count covid 19 deaths: Some countries, like USA and Sweden count virtually every death as covid 19 if the person was positive. Many countries only count it if covid 19 is the actual cause of death. Some countries, like Norway, do not count nursing home deaths or deaths outside of hospitals, Since nursing home deaths account for 50% or more of all covid deaths, this is like giving yourself automatic one puts on 9 out of 18 holes. "guys! look at my score" 60-70% of covid 19 deaths in Sweden were from nursing homes.
3. Ethnic groups: 18% of Swedens deaths were Somalis, which represent .69% of Sweden's population. Why? Because they did not follow basic social distancing guidelines and live in large multi generational family groups crammed into small apartments.
The only way to untangle the mess of inconsistent stats and differences between strategies is to look at excess deaths from covid 19. How many extra deaths over the yearly average of deaths from all causes. I will try to find some.
Sweden got hit hard, but when you compare their death rate per million (547) to other countries and US States, they don't even make the top 10
1. New Jersey 1757 deaths per million
2. New York 1665
3. Connecticut 1220
4. Massachusetts 1206
5. Rhode Island 921
6. Belgium 853
7. DC 805
8. Louisiana 733
9. United Kingdom 659
10. Michigan 632
Many countries and US States are seeing a new surge of cases and deaths. Sweden cases and deaths per day are heading towards zero with no surge. They may end up looking good when all is said and done.
The NYT wrote an article called "A cautionary tale" slamming Sweden, but the real cautionary tale was sitting right under their noses.
Why Sweden Succeeded in “Flattening the Curve” and New York Failed - Foundation for Economic Education