Creative Commons is convoluted, and isn't ONE license, but a family of more than 6 variations.
Further, Creative Commons wasn't intended for mixed license material - as in, listing a raft of sections as product identity and thus off limits. It can be used that way, but it's not a standard feature of CC. CC was intended for "whole document" level licenses.
ORC and the WOGL have explicit provisions for excluded-from-license portions.
The CGL provides multiple levels of exclusion... prohibited, referenceable, modified....
I don't like the CGL... it's a bit unclear.
All three are designed for a mixed content mode, some open, some closed, in the same publication.