A multi polar world has the "multi" referring to many head honchos each with their own retinue of oligarchs, fighting for supremacy in overt and covert ways, until it stops being a multi polar world. If you want the world to look like a setting for a 4x game in terms of how much shit is happening, choose multi polar world.
Multipolar could also just be DC, Paris, Warsaw, Tokyo, and Tel Aviv competing for market share against India and Brazil and the Saudi's in mostly peaceful and contained manners, like soccer riots during/after the World Cup or the Olympics.
No need for multipolar to include Beijing or Moscow or the IRGC/Ayatollah as power players in a 'multipolar' world.
Also, once Musk get's Mars going, and I expect Bezo's will try something somewhere else (best guess Ceres or Ganymede), the political axis might evolve a 3rd dimension that has to factor in off-planet and light-lagged politics.
American hegemony over the western hemisphere and Indo-Pacific will be tricky enough, and it may be simpler and easier to let France, Poland, and Israel handle a lot of the European theater.
Guess we might have to add Argentina back into the mix too for at least economic power, which is a pleasant surprise, with what Milie has accomplished so far.
Though I do expect the US will have to do a Day of the Rake eventually and save what we can of Canada from the CCP and socialists under Trudeau's cliche, with the way that place is going, and may need to deal with the situation in Mexico more 'directly' than we have since Pershing at some point.