I am using FTB's new app launcher, which means many of the previous questions on FTB's modpack file locations don't seem to apply anymore.
The FTB app launcher seems to use the Overwolf app, so I tried looking through the Overwolf folder in Program Files (x86) with no results.
I also tried looking through the %appdata% folder but only found save files for another Overwolf app. There seems to be nothing in my .minecraft folder either.
It appears FTB doesn't save modpacks in folders with clear names as curseforge does.
So, where are my FTB modpack files located?