[Hatredcopter]

Grade 1 does include all the numbers, but that's only a few of them. It's mostly just easy kanji for easy words, such as car, river, man, woman, red, white, big, small, among others. I don't believe they're grouped in any order except by difficulty - you can probably see that the higher grade kanjis are a lot more complicated than the lower grade ones.

Edit: not sure if you were aware, but the "grade" actually refers to the grade level that Japanese schoolchildren learn these kanji.