Gollyplot
Someone who is versed in all sorts of different conspiracy theories, from all over the world, even in different languages...and who spews them gladly and constantly.
"His high-school knowledge of French combined with his ravenous appetite for arcane, unprovable, specious knowledge made him a gollyplot par excellence! He spread the 'secret' of Emmanuel Macron's lascivious habit of dressing up as the Empress Joséphine far-and-wide on the social media platforms, under his nom-de-plume: Pendraggin. "