Almost all in-game and menu dialogue. The files don't follow a chronological order.
This project doesn't contain all story dialogue, for some of them only exists in another format. I'll see if I can upload those later. You will find main dialogues, side quest dialogues and random NPC dialogues. Every file has several dialogues from different sections of the game, be aware of that. You will follow bin_us.txt-001 for story dialogue and EN.txt-001 for menus, items, chapters etc. M1030_S0310_N_eng and similar files are in-game novels. Files named as bin_es etc are the spanish version of NieR:Automata.
The following files have additional dialogues that are not part of the game:
M3060_S0035_GM_N_Sample_0912_eng.txt-001
M3060_S0035_GM_N_Sample_0912_eng.txt-002
M3060_S0035_GM_N_Sample_0912_eng.txt-003
M3060_S0035_GM_N_Sample_0912_eng.txt-004
M3060_S0035_GM_N_Sample_0912_eng.txt-005
They basically contain the Devola and Popola light novel with just a few new lines.