Ahh, I did wonder how you compiled your lists.
So for me personally it’s not the end of the world if your list is up-to-date but my local files are not. Having 98% of the icons load in the dropdown is better than nothing. If anything it would remind me to update my font files if I see broken ones in the list. Off the top of my head, though, if you wanted to be able to offer this feature while trying to keep things synced you could make a filter for the YAML file location that we can use to point it to our local version if it is available and we feel like updating it ourselves.