The list is on Nikon website. Well, it's not really a list, but you can find all the Nikon Wi-Fi adapters (there aren't too many) and check the list of supported cameras.
To the best of my knowledge, only WT-4 and WT-5 support D800. And Helicon Remote doesn't support anything non-Nikon.

The ...

I searched the forum and see things from 2014. Is there a 2016 list of devices that can plug into the usb connector or 10 pin connector of Nikon and connect to Helicon Remote? (other than high $$ Nikon adaptor)