Well, it would be interesting to see the Pokemon sprites. But also a mixture of them from each of the game series. Maybe even the Pokemon that represented the games, for example, the Pokemon Red Charizard.
As for the file names, try to see what icon fits what for each. For example, try using the starter Pokemon for each icon such as the starter dock icons:
I figured out the name. It's just "Pokédex". Im using WinSCP to put the theme on my phone and when I try to name the icon "Pokédex", it replaces the "é" with some "%E9" or something like that and so when I load the theme in Winterboard, the icon doesn't change.