This graph is extremely misleading.
First of all it states in the caption that it only includes
highest donation rates among countries with large populations
Even of this disclaimer were true, it's completely arbitrary and makes no sense. Norway (5.5 million) has about 8 times the population of Luxembourg (670,000). Whereas the US (340 million) has about 60 times the population of Norway. If such a size discrepancy is so meaningful that Luxembourg should be excluded, then how can it be relevant to compare Norway with the US despite the vastly larger population discrepancy? Luxembourg should be #3 btw along with Liechtenstein (2) and Monaco (4).
More damningly, they don't even live up to their disclaimer. Taking the numbers straight from the quoted source. They randomly excluded Denmark (7) and Ireland (8), which are just as populous as Norway and almost equivalent to Sweden in per capita ODA. They also excluded Iceland (11) and Finland (12), which come in above UK/Canada/Belgium/France. And then as the cherry on top they conveniently excluded Qatar (17) and Saudi Arabia (18). The US is #19. And then it's also missing Austria (20), UAE (21), and New Zealand (23), before you get to Australia, which is actually 24th, not 12th.
Furthermore, ODA is just a small part of the economic picture. As it states in the wikipedia article
by definition, ODA does not include private donations
The US is giving approximately $64.5 billion annually in ODA. In comparison, private charitable donations from American individuals, foundations, and corporations totalled $557 billion in 2023, with 67% of that money coming from individual donations.
Granted, many of those donations are directed towards domestic causes, but even if a relatively small percentage is directed towards foreign causes, it alters the narrative that is told by this graph. For instance, this organization is largely funded by the Gates foundation, which is a private charitable organization, and thus not included as ODA.
The foundation has donated more than $6.6 billion for global health programs, including over $1.3 billion donated as of 2012 on malaria alone, greatly increasing the dollars spent per year on malaria research. Before the Gates efforts on malaria, malaria drugmakers had largely given up on producing drugs to fight the disease, and the foundation is the world's largest donor to research on diseases of the poor. With the help of Gates-funded vaccination drives, deaths from measles in Africa have dropped by 90 percent since 2000.
In conclusion, I feel like that graph helps paint a certain political narrative that isn't even remotely accurate, partially because it randomly omits about half of the countries in the top 25, and partially because it's measuring a very limited subset of philanthropic activity.