One from the Alternate History Travel Guides series, which I'd give a link for, but alas, the website appears to be defunct.
Lopez – a world in which Paraguay managed to expand early on at the expense of a fragmented Brazil and a weak(er) Argentina, and just kept on growing. Today the Paraguayans dominate the entire hemisphere save for neutral Canada, except it’s not really “Paraguay” any more than the Roman Empire was a small Italian city-state. All of Latin America has been incorporated, and the battered remains of the US – defeated by a Paraguayan nuclear first strike in the 1970s, in which 60 million Americans and 14 million Paraguayans perished – are under the thumb of Asuncion, but save for Mexican “stolen territories” have not been directly incorporated into the Empire – the First Consul is a bit uneasy about the prospects for assimilating the North Americans, who remain convinced of their superiority to the multi-racial Catholic inhabitants of the Imperial Republic of Paraguay. Anglos are encouraged to emigrate from their war-and-rebellion battered land to Canada, the USP (see below), the more densely populated parts of Paraguay (where they hopefully will assimilate) or the European Empire of Kaiser Frederick V.
“Freddie’s” empire is one of the other two big powers of Lopez’s world, along with the Empire of Japan, which controls most of East Asia. None of the three is a particularly lovely place, but German Europe is probably the least God-awful of the three: racism is passé, the beer is good, and the rule of law – oppressive as the law may be – is usually followed. The Germans are even starting to – slowly, cautiously - to give self-government to their African possessions. (For Germany’s Arab subjects – those sitting on top of large pools of oil, that is – things are…less pleasant).
The Paraguayan Republic is ruled by the First Consul, elected for life, which somehow always turns out to be a member of the Line of Lopez (currently Antonio VIII, although he’s starting to look a bit shaky). On the positive side, there is virtually no racism, crime is low, the economy prosperous, and there is plenty of opportunity for an ambitious young man. On the negative side, it _is_ a dictatorship, despite the “republican” trappings, the secret police are omnipresent, and the constant propaganda is positively High Stalinist in its fatuity and excess. The 12 million inhabitants of Asuncion are always in the shadow of the 800-foot statue to the first Antonio Lopez, and one can hardly walk a block without tripping over a monument to the glory of the dynasty. It is also a sexist, macho, and ferociously nationalist society (no, not the same as racist – it's just that foreigners who don’t make the obvious choice of migrating to Paraguay or who say bad things about the Empire on the news are clearly Not Right in the Head).
The less said about the Japanese Empire’s methods for keeping its empire orderly and profitable, the better. It’s not a nice place for anyone, not even its Japanese citizens (The average Japanese woman would commit seppuku out of shame if they produce less than four children for the Empire before menopause, and Japanese men, after their universal four years in the armed forces, are expected to be gainfully employed, married, and fathering sons tout suite, and never failing a opportunity to display patriotic enthusiasm).
Although most people in this timeline talk about the three-part division of the world, there are several lesser but not unimportant powers that retain a fair bit of autonomy: the Russian Holy Empire, a fairly brutal (and densely populated) theocracy, the socialist dictatorship of India, the United States of Pacifica (OTL Hawaii, Australia, New Zealand, New Guinea, loads of islands: lots of émigrés and a disproportionate nuclear arsenal), and Greater South Africa, an oddball Japanese ally which is doubly odd in being an actual ally rather than a puppet state. The atomic arms race has eased a bit in the last couple decades, after the Near Miss of ’89 concentrated minds wonderfully, although the slowed growth of nuclear arsenals just means more secret bio-weapons research.