Maeda taught Kodokan Judo. That he called it "Jiu Jitsu" makes no difference, it was judo. The Kodokan may or may not have liked Maeda, I do not know, but it wasn't so with Jigoro Kano. Kano graded him twice while he was in Brazil (middle grades). Everyone called it Jiu Jitsu at that time and is why the Brazilins called it Jiu Jitsu. The reasons for his "field promotions" is said to be due to his teaching and spreading the art of Kodokan Judo.
I agree that Maeda taught the Gracies Kodokan Judo. But I don't think he called it Jiu Jitsu because everyone called it that. There are several references to JUDO, eventhought Judo was sometimes called Kano Jujutsu. And many Japanese called the Brazialians JUDOKA. This is just a thought.
You're also right that most of the Gracies books deal more with Standing techniques instead of groundwork. Helio himself has said that since so many pple first saw BJJ in competition, where they do a lot of groundwork, they thing it all about the ground. He says very few schools are teaching what true BJJ Self Defense is, which is staying on your feet and putting the other guy down. In GRAPPLING magazine it highlights parts of Royce and Renzo's Self Defence book and you see very little ground work most of it look like Judo Goshinjutsu.
LeTerian Bradley
There are no excuses on the mat, in the cage, or on the battlefeild! Train wisely!