Here are the names of the folders and what data they include, as well as what the files inside are used for.

2- Map Sprites on the statsheet screen, sorted by class
3- Map sprites and their animations, sorted by class
b- Battle Animations, sorted by class
data- includes 'database' file, used for character data editing
dispos- event data
evt- event data,  misc.
f- portraits
gmap- ton of important LZ77 data
m- chapter data
map- chapter/map data
onfx- graphics
s- background graphics
script- event data, shop data, chest data, village data, and more
sf- ???, but could easily be found out
