Of course The Muppets are the best source for culinary history. This is what History.com has to say about figgy pudding.
By the 19th century the ingredients were more or less standardized to suet, brown sugar, raisins and currents, candied orange peel, eggs, breadcrumbs, nutmeg, cloves, allspice and plenty of alcohol.
No bacon. Suet is not even a pork product.
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