@nevisx Think about using favorites on ES. There you can collect your files so maybe a list with NES translations and NES Homebrew will help you. Real folders are not intendent to work .......
There is a bug in ES that makes folder navigation possible.
https://retropie.org.uk/forum/topic/11308
But it needs modified scripts to define right emulator calls - from the edge view it is possible with lots of manual editing gameslist files.