I cannot recommend any specific dual USB port for you. I can tell you that, yes, that spot accepts the same size buttons/blanks as you find to the left and right of the steering wheel. I have an aftermarket button in that spot, and moved the factory USB port to the glove box where it use to be located in the earlier 5th Gens.
The correct size will be advertised as "For Toyota 32mm x 22mm (sometimes 20mm)." Compatibility is also the same as 2010+ Toyota Prado (Australia). You will probably have to tap into a 12v from somewhere behind that panel, such as the 12v socket right next it. Not sure what wires are running to that USB port.
Here's a couple of examples from Amazon:
Example 1
Example 2
Hope this helps!