These countries are obviously doing something right and the rest of the world should take notes from them

What they're doing right is a mixture of rather progressive social policy (in the process of being abandoned in favour of the extreme right), and exploitation of poorer countries through unequal exchange. It's high-school level knowledge of colonialism: import raw materials and agricultural produce from poor countries at low prices, export high-added-value goods and services at a high cost. If every country were to adopt that model, it wouldn't work because there'd be nobody to exploit. I suggest you read into the concept of unequal exchange

I cannot believe this report, because Bhutan isn't on top.