Futarchy for starters. Neocameralism proposed by Mencius Moldbug might work better but is risky. City state oligarchies. Anarchy-Capitalism if you can get it. A Republic with limited franchise if you can keep it. A properly set up monarchy. Even democratic technocracy, where democratic element would have about as much role in governance as the Monarchy part does in the Constitutional Monarchy of the United Kingdom. Arguably we are nearly there anyway.