How do I uninstall third party plugins that I don't know are installed?

I recently bought a newer MacBook Air (an M1) and it is running macOS Tahoe 26.3.1. I migrated all of the applications and data from my previous MacBook Air (an Intel one). That MacBook Air had Creative Cloud installed on it at one point, but I had uninstalled all of the Creative Cloud apps from it at one point because they were no longer running properly.

Now that my M1 MacBook Air should be able to run all of the apps again, I have re-installed several CC apps onto it, including Premiere 2026 (please don’t judge). Every time I launch Premiere, it crashes unless I disable third-party plugins. So it would seem that I have a plugin lingering somewhere on my system that needs to be uninstalled.

Problem is, the plugin is not showing up as installed on the Creative Cloud app, and I can’t find a way to see which plugins Premiere thinks is installed. How do I remove a plugin that does not appear in any list so that I don’t have to keep remembering to launch Premiere holding the Command key down so I can check a box each and every time I want to run Premiere?