As mentioned in the quick answer section above, the Samsung Galaxy Z Fold 5 has dual-SIM support, but it comes in two flavors. The US version comes with one physical nano-SIM card slot and an eSIM.
Yes, the Galaxy Z Flip 5 does have dual-SIM capabilities. You'll need to combine a physical SIM card with an eSIM, however. Yes. To be specific though, the Galaxy Z Flip 5 is equipped with a nano-SIM ...