Chokyi Nyima's doesn't cover all and is not as refernced/scholarly but he is a great teacher in that too as usual and almost a complete great new teaching. Araga is the same person and a merged word like the word khenchen but more endearing like Atul(ku).Wallace/Gyatrul's is covered in two books not just one: A Spacious Path to Freedom: Practical Instructions on the Union of Mahamudra and Atiyoga plus Naked Awareness: Practical Instructions on the Union of Mahamudra and Dzogchen.
Yes but I couldn't find what Rinpoche taught in the past two days anywhere in those two books by Gyatrul Rinpoche while the it corresponded very well with Chokyi Nyima's book. Those two book also seem too extensive for just one week of teachings.
The Wallace/Gyatrul's more scholarly and reference based as in the old Tibetan/Indic tradition. Chokyi Nyima's is simple and incomplete but profoundly new in a way as he is a force of nature like Chagmey or ChNNR. I read all 3 some years ago but gave them away like numerous (hundreds of) other books when I found the ebook versions free online as I now prefer netbooks/e-readers/tablets/smart-phones each for different reasons. ChNNR's oral like the original is the easy way plus his amazing input and he is pointing out the whole time effortlessly.
Also: Karma Chagmey's fascintaing book on his child disciple, the utterly amazing Migyur Lingpa who died at 22, that became the scholar's guru: viewtopic.php?f=49&t=1085#p41396
Like a movie and you'll learn wonderful interesting details (about TB, terma, unseen beings, spiritual invisible clashes, etc.) not written about elsewhere.