After more than 2 years there is just nothing available with regards to community watchfaces.
In the meantime I considered the official Nothing App as dead, no further updates are coming in since months. While the community is enabled to create widgets and apps for the phone, nothing like this is happening on the watch. It is not even considered, I think.
At least I can use Gadgetbridge to use my WP2, which enables me to keep my data to myself, downloading my excercise data unto my laptop and use it locally only. Also Gadgetbridge supports basically everything (except taking calls from my wrist, but I am not Michael Knight anyway.). Only drawback is that you can only use the 6 pre-installed watchfaces, but one gets used to it.
I have to say, that I am disappointed by cmf regarding the watch. the earphone is great and I would even consider the phone, but the watch is a dead end.