I'm still pretty new to FL Studio and very new here on the forums. But until recently I had never bought a 3rd party synth, so for the past year I did a fair amount of sound design in GMS.
I recently went through and sorted what I had in my USER folder, and thought I might as well share for those interested.
Everything is labeled to make it pretty easy to understand and search through. (BASS, LEAD, KEYS, PLUCKS, PADS, etc)
I would recommend adding a Soundgoodizer on the insert for good measure since GMS lacks a real compressor

If you want to scan through you can hear samples used in the MP3 attached. Careful as volume is loud on some parts!
I'm pretty happy with the EDM and synthwave style sounds. Feel free to use in your projects and let me know what you think!
If you do use in a project, it'd be cool to hear what you come up with (you can share a back link here to the song sharing forum).
Other forum linked here: viewtopic.php?f=1949&t=263939