Nelda, please don't confuse my statement as an indication of no collaboration taking place. My post was directed at Valerie's comment that indicated that this was an activity undertaken by the Categorization Project in order to layer the category levels (which it was not).
In this case, the 1776 Project is working to correct years worth of template errors and SJ (Leader of 1776) and I have been routinely collaborating on how I (as a co-Leader of Categorization and Template Projects) can assist him with these tasks.
The first step was to correct the sticker (previously Template:1776, now Template:1776 Sticker) that was causing many of the category errors. In short, the original Template:1776 placed profiles into the high-level American Revolution category that was never really intended to hold profiles on a permanent basis. These profiles were intended to be investigated and moved into further subcategories as needed, but when that never happened, the category flooded and now contains over 13,000 profiles.
In the new Template:1776 Sticker, the category addition to profiles is heavily monitored and provides error-checking to prevent these types of issues.
So now that the root cause has been addressed, the task is underway to clear out the American Revolution category by fixing the stickers on each profile. To help with this, American Revolution was added to the Top Level category list in order to identify suggestions on profiles that changes are needed.