The new Shield remote is fantastic and will work on any Shield TV. Or if you don't want to spend as much, this works fantastically as well. It plugs into the USB port so it's very stable and doesn't use bluetooth.

I have a CCwGTV and I am looking at another remote. I can't attest to the functionality of them, but these are the 2 I found that look promising.

https://www.amazon.com/gp/product/B0BNH17D18/ref=ox_sc_act_title_3?smid=A1ME16F4UQKR58&psc=1

https://www.amazon.com/gp/product/B07P322VRP/ref=ox\_sc\_act\_title\_2?smid=A1XNKS51HM8B0D&th=1