It wouldn't let one port use 2Gb and only leave 0.5 for another port. There are ways to make that happen, but not with a basic switch and not by default.

This USB-C laptop stand also has 5 ports — and it’s only $34 right now The Ugreen USB-C docking station laptop stand is an Amazon hidden gem for laptop users.

Compact and versatile 5-port switch for small office and home networks. Supports 2.5GbE, offering a significant speed upgrade from 1GbE. Priced around $50, providing an affordable networking solution.

Now that 2.5 ports are widespread for home use I'd say just buy a switch with a bunch of 2.5 ports. Plenty of options with a bunch of 2.5 ports and 1-2 SFP+ slots and you won't need to worry about ...