Ok, that’s called a toggle switch
versus a rocker switch.
The good news is that in the US the size of the switch box for these are exactly the same, the wiring is the same, and so you can just substitute one for the other.
So if your concern was whether or not the fan switch devices shown in the FAQ will work, as far as size goes, they should.
If you’re saying aesthetically that you would prefer a toggle switch, I don’t think there are any that control fans. They aren’t very Popular for smart switches because with a dumb switch you lock the switch into place, up for on and down for off. But with a smart switch, you might be controlling it from a schedule, by voice, from the app, or from the wall. So the switch will rest in the center position. Making it ready for the next instruction.
With a rocker switch this is barely noticeable. But with a toggle switch the switch will be sticking straight out and that tends to bother people. So they just aren’t as popular a design.
There are some toggle designs available just for smart light switches, but I don’t know any for smart fan switches.