I don't know about those things so much tbh
I've heard the US will continue to decline while China rises and there might be some sabre rattling occurring in disputed territories like islands in the South China Sea, Tibet, the border area between Pakistan, India and China and China's ambitions in the Arctic of all places (they designated themselves a near Arctic state and have developed icebreakers for traversing the Arctic
https://asia.nikkei.com/Politics/In...ina-s-near-Arctic-state-claim-in-new-cold-war).
But in the areas of space exploration the US might continue to remain in the lead with China depending on the government's priorities and how much funds they allocate to that venture. Most likely that will be the case because of things like Space Force and the US military's ambitions to bring their strategies in land battles to future anticipated space battles and conflict resolution outside of Earth.
White birthrates in the US and western anglo countries might keep shrinking while Eastern Europe and Russia become the new strongholds for a majority white population.
This might be true also in Australia and New Zealand but China might be making moves there soon to cut down on the possibility of Australia and New Zealand continuing to be centers of anglosphere influence and might get eventually fall under unannounced but still obvious dominion by China.