Uh, the OCC process was not even discovered until 1986.
In 1986 the Ohno Continuous Casting (OCC) process was introduced. The world patent "UP-OCC" (Ultra Pure Copper by Ohno Continuous Casting Process) was developed by professor Ohno of Chiba Institute of Technology in Japan.
The OFC conductors and XLPE insulation in the Mogami cables is fine. The 22awg stranded conductor size is adequate for ICs, although some like a bit larger size, which may provide a denser, more robust (i.e., less thin) sound. You can purchase that cable bulk for around $1/foot. However, professional lineage cables like those are designed for ruggedness, flexibility, and “good” sound but not necessarily SOTA sound. In this case, the gold over brass connectors could be improved on. WBC previously offered KLEI connectors (for more money) which, IMO, would probably result in a sonic upgrade based on the copper base metal and minimalist design. Your AQ cables may have solid conductors and, if they are older, I am not surprised if they sound a bit warmer.