This nugget can be read as a stand-alone article, but it also provides detail for Nugget #8 - Rookie Contracts.
The information for this nugget, and all the nuggets in the “8 series” (8, 8B, 8C, 8D, 8E) was sourced primarily from Chapter 8 of the book, Crunching Numbers.
Year One Formula Allotment & Total Rookie Allocation
This Nugget explains that the Total Rookie Compensation Pool (explained in Nugget 8) has a sub-component, the Year One Rookie Compensation Pool, which applies to money paid to draft picks in the year that they are drafted (as well as any UDFAs signed that season).