I haven’t run into a USB-PD charger that doesn’t fall back to 5V/2A if it can’t negotiate power delivery. As long as you buy a 45/65/100W PD brick and a supporting cable (both are cheap and getting cheaper) you don’t really have to worry about what you might be charging.

Even 20-25W phone chargers and cables will generally slow-charge most laptops in a pinch.