I understand that—I didn't mean to imply that the common name rule should be overwritten in these scenarios. I've merely provided examples of how letters and symbols may be substituted for numbers.
However, the common name rule does not dictate entry name formatting as you've said. With that understanding, the final four examples I provided in my previous post—MDK, NG, SSX, and XCOM: Enemy Within—feature title acronyms that are either only known with supplemental in-game information (that you've said we should ignore) or have no data information at all and are merely formatted as such as a stylistic choice. So, should those entry names remain in all uppercase, or should they instead be formatted to title case?