I think a 30W, 45W, 60W set of 3 products, most people would then buy 2 of them, a home / work version and a travel version. 30W 2 port, 45W 2-3 port, 60W 3-4 port, each has a legacy Type-A port, rest is PD and they are numbered for priority so right of first refusal port so you can decide what needs most recharging.
I could draw it on napkin if its not obvious.
In the example of a 2 port 30W charger, if the laptop was 30W, then initially the laptop would get all the power, 2nd port not giving power, then as the laptop to nearly full charge it would demand less then the Anker 2nd port would offer power.