In some base games, in addition to including the respective .ini file (located in "/content/config/") they include other .ini files. Many of those extra files correspond to games that did not officially come out, but in which the big N was working.
All those files and a list of which game corresponds to each file can be found in the initial post of this thread as "All existing Wii U VC N64 config files made by Nintendo" in the information block with compatibility lists.
All those files and a list of which game corresponds to each file can be found in the initial post of this thread as "All existing Wii U VC N64 config files made by Nintendo" in the information block with compatibility lists.