Embarrassingly, I posted the directory for the wrong type of integration. Rookie move! [I've only been supporting Adobe's video partners since 1996; still learning my way around...] Those are CEP extensions, not plugins. As such, they live here: /Library/Application Support/Adobe/CEP/extensions [Again, root /Library, although you may wish to check ~/Library as well] NOTE: CEP extensions are normally managed via Creative Cloud Desktop. Specifically: Stock & Marketplace, Plugins tab, "Manage plugins".
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