No, like forreal, has any country ever benefitted from a IMF loan? (Excluding the parasitical entities that created it)

No. The real idea is not to benefit any country and their development. At most, like queermunist said, the compradores can take some of that money to keep the explotation-repression going for the interest of the countries we all know and hate (pensá en el Toto Caputo).

Citing the resignation letter of a former IMF senior economist, Davison L. Budhoo:

Today I resigned from the staff of the International Monetary Fund after over twelve years, and after 1000 days of official Fund work in the field, hawking your medicine and your bag of tricks to governments and to peoples in Latin America and the Caribbean and Africa. To me resignation is a priceless liberation, for with it I have taken the first big step to that place where I may hope to wash my hands of what in my mind's eye is the blood of millions of poor and starving peoples. Mr. Camdessus, the blood is so much, you know, it runs in rivers. It dries up too; it cakes all over me; sometimes I feel that there is not enough soap in the whole world to cleanse me from the things that I did do in your name and in the names of your predecessors, and under your official seal.You know, when all the evidence is in, there are two types of questions that you and me and others like us will have to answer. The first is this: - will the world be content merely to brand our institution as among the most insidious enemies of humankind? Will our fellow men condemn us thus and let the matter rest? Or will the heirs of those whom we have dismembered in our own peculiar Holocaust clamor for another Nuremberg?

The compradores that underdevelop their own countries for personal gain. Personal enrichment, all it costs is sovereignty.

The aim of the loan is to indebt Argentina so much that its currency will continue to go down and down and down, essentially wrecking the economy. That’s what the IMF does. That’s its business plan. It makes a loan to subsidize capital flight, emptying out the economy of cash, leading the currency to collapse, as it is recently collapsed. As soon as the $50 billion was expended, or wasted, in letting wealthy Argentinians take their pesos, convert them into dollars, move them offshore to the United States, to England, to the Dutch West Indies, and offshore banking centers. Then they let the currency collapse so that the IMF model, which it’s announced for the last 50 years, the model is if you can depreciate a currency what you’re really lowering is the price of labor.

The right wing Chicago School propagandists keep claiming that if a country’s сurrency is depreciating, it must be because its prices are going up. But that gets the line of causality inside out. For debtor countries such as Argentina or other Lаtin American countries, the balance of payments has little to dо with domestic prices, domestic wage rates or domestic cost of production. The balance-of payments – and hence, the exchange rate – is swamped by debt sеrvice.

https://www.nakedcapitalism.com/2018/07/michael-hudson-argentinas-new-50-billion-imf-loan-designed-replay-2001-crisis.html

Depends on your definition of benefitted. If you're definition is just "GDP line goes up" and ignore everything else then I'm sure there's some "success stories"

The Tokaido Shinkansen, the first high-speed railway in the world, was partially funded by loans from the World Bank. Link in Japanese here.

Oh whoops that was the World Bank not the IMF, my bad.

These countries did