For most people, the big ones that I know of are Samsung's Watch Face Studio (which you have) and Watchmaker (https://getwatchmaker.com/). Source: over 1 year ago

The getwatchmaker.com site is the most bizarre site. If you click on watch faces you get a bunch of categories, but then when you click on them you get faces from 2 to 3 years ago. I know there are newer faces because I have seen some shared here, but there doesn't seem to be a way to find the newest faces. Source: about 2 years ago

Are they still on getwatchmaker.com under your profile after? You can check your profile via web browser to see all your published faces. Just click the link and log in with your app info. If they aren't there then one thing to make sure is that the faces you are "Publishing" in app are not on the banned brands list in the rules doc linked to the right sidebar under Group Rules. If they are on that list then they... Source: over 2 years ago

There's https://getwatchmaker.com which is the official repository for free and paid faces. Source: almost 3 years ago

My watch came with several watch faces from the manufacturer, so the answer is no, not only paid. Unless you consider that you paid for the watch of course, so those watch faces are included in the price. Then there are free watch faces in the Play store. Finally for a platform fee you can get apps such as Watchmaker where you can make your own watch, or download others watches. I paid 7 dollars or so and got... Source: about 3 years ago

Left is obviously the RAW, right is the exposure slider on Lightroom all the way right, with a Priime (https://priime.com) Lightroom preset. Source: over 1 year ago