I forget where I once read that ‘Container’ existed in the first level column, and I think it might apply in scale as well. The official app list could be differentiated from the custom docker images, so that you can better differentiate between the mirror settings and not accidentally delete mirrors from the official app list
This category is for feature requests, it’s not for general help or such. You’re not going to get any updates except for when a feature request is approved.
Your feature request doesn’t appear to have gathered much interest (not especially surprising; even you didn’t vote for it). Perhaps others reading it are as confused as I regarding what you’re actually requesting.