Which USB-C hub should I get for a MacBook Air?

Get the CalDigit SOHO Dock. It’s not the cheapest, but it’s the only one I’ve seen consistently work without issues on MacBook Airs. PD charging is reliable (100W input—more than the Air needs, which means headroom), and the HDMI port drives a 4K display at 60Hz without flickering or signal dropouts. The build feels solid, and it doesn’t get annoyingly hot like some Anker or no-name hubs.