Hmm, Extra Folder Mode? It's not a mode, it's just where you battle Navis with only the extra folder in the Secret Area. Do you remember it? It's when you speak to the Navi ghosts and they tell you your current record for "so and so" and ask you if you want to battle again. It would be a seperate division for the Navis (I think they are V3 Navis, not too sure). Division could be 'Extra' I guess.
Grave Beast? Isn't it only called Grave in the anime. Let's stick to Gospel. Actually, come to think of it, you are never told of your time when you defeat the final bosses, I know that's true for the Life Virus, Gospel, Alpha and Duo, and I doubt for Fake Bass in MMNB2.
It's JapanMan in MMBN3, not YamatoMan. It's going to cause confusion.
Hmm, I'll get you the Legends stuff soon since that's missing. It's not much since there aren't any "levels". Well, for Legends 1, it's:
Game Completion: Easy, Normal, Hard
Races: Course D, Course C, Course B, Course A.
For the races, I'm not entirely sure, if that's the amount of races, I'll look into it when I can.