This caused me to think about upside versus downside and benefit versus some word that isn't anti-benefit, unbenefit, abenefit, ilbenefit, irbenefit, imbenefit, inbenefit, debenefit, disbenefit. There is no etymological related antonym to benefit.
suggestions off the top of my head are countries with or near significant colonial influences, eg madagascar and indonesia seem to be pretty similar across the board
although far from comprehensive such is the case of languages listed on wiktionarys translations dropdown on the english entries of the countries at least
the only notable exception i spotted is the navajo name for indonesia apparently being "Kéyah Dah Ndaaʼeełí Łání" which is quite interesting and i dont really have an explanation for that discrepancy (perhaps its pronounced similarly and orthography just isnt idunno) but navajo isnt a national language anywhere anyways so it doesnt really matter for the original question
Remember the meme? Deutschland, Duitsland, Tyskland are all regional variations on the same name. Allemagne and Germany are completely different names for the same country. Of course every language have their own way of saying "The United States of America", but in essence it's the same word, the same idea. Even Japan is Japón in Spanish, Ιαπωνία in greek, and so on. No one can pronounce my name correctly if I go abroad, but most of the time there is a regional variant I can use.
The question was what country is known "by the same name" by the most people around the world. You're not going to find a place name that is pronounced and/or written exactly the same in every language. That's how languages work.