To be frank, it's been a while since I've dealt with them and had to think about them.
Try to see which could be mounted and would give you the files.
The game name should correspond to the patch. I've managed to find one of the game names from my older extracts, and it is something like
As for why there are 2.app files, no clue. I think there being more than 1 is normal even for 3DS titles tho.
Edit:
Yup, perform the standard steps to dump romfs, including mounting 00000001.app image to drive, then viewing it.
The ROM is in a folder called rom, and all the patches are outside.