don't know if this will help, but you may be able to correct the names through command prompt. it will display the name as seen in windows as well as the command prompt name (they're different a lot of the time).
do you have the save files in your wii u sd card/saves folder?
i want to delete these.
Thats the gamecube save folder, & the files you have in that folder combined come to 10.3GB... What ever those file are, Im 99.9% sure they're not a game saves.
Back the folder up onto your PC, Delete it from SD & try Nintendont on your Wii U.
Backup everything on your SD card EXCEPT that save folder to your PC. Format the SD card again with Fat32 32k/64k, Then copy everything back. Also make sure you have the latest Nintendont boot.dol from its thread in this section https://gbatemp.net/threads/nintendont.349258/Hey thanks for the reply,
I cant backup those weird files, windows say it cannot copy it, usb helper says they detect weird files in my sd card, and i have a problem loading nintendont in wii u mode, i cannot load nintendont injected files, it only give me a blackscreen