I have two black DualShock 4 controllers. These have built-in batteries so they need a dock that can charge them. Most of the ones I saw held the controller upside down to charge which I didn't like the look of so I bought the official charging station that is sold in Japan.
Xbox One S
The Xbox One S controller have removable batteries so I use rechargeable ones that I swap in when power runs low. For these controllers, I don't need it to be a charging dock. I got the Gear controller stand in white that matches the controller colors I have. Each stand holds one controller.
The Switch is interesting because it has two types of controllers: Joy-Cons and Pro. Two of the Joy-Cons normally connects to the Switch itself so they don't necessarily need a separate stand. I have the Switch in a protective case so taking out the Joy-Cons can be a troublesome so I got a second pair of Joy-Cons for my kids as well as a Pro controller that I normally use. Thus, I needed a stand that can hold 1 Pro controller and a pair of Joy-Cons.
Fortunately, Power A came out with Joy-Con & Pro Controller Charging Doc for Switch that exactly fits my needs.
This charging stand has a built in connector that plugs into the USB port on the Switch's dock and the top of the unit has lights that indicates that it's charging and when each controller is charged.