To address the lack of a way to export a list of plugins directly from FL Studio, this is a simple workaround script that allows you to export a list of all your plugins in FL Studio in .csv format by collecting all the data from .nfo files in the Image-Line/FL Studio/Presets/Plugin database/Installed folder.
This script can export just a list of names or all the data found in the .nfo files. It can also split the list into a list of Effects and a list of Generators if needed. It also saves your preferences to a pluginpreferences.json file so that you don't have to find it again.
Note that this method isn't perfect and might pick up plugins that aren't working. There is a VerifiedIDs.nfo file that I can use to fix this but I will have to restructure some of the code.