Yea that site is old, I don’t know if it has been updated in a while. It’s not by SmartThings, somebody made a tool to parse all of the icons at the time, sorry if you are the creator and I haven’t credited you.
Ah, I see what it’s doing now. yet, it’s still weird that when you go directly to https://graph.api.smartthings.com/api/devices/icons that those icons I mentioned aren’t there. Could there be a different API?
Some time after the release of app v2, the list of icons available via the graph API was significantly reduced, and now matches what is shown in the mobile app.
I think the previous full list was being sent to the app and then pruned. I remember the icon list in the app taking forever to render, then in a future release that was fixed, and that was the same time they disappeared from the API.
All the icons that were in that previous list are still usable, however I don’t know of any means to retrieve it.