Dubbin recipes tend to vary by locality: somewhere I have a book with more than 300 regional recipes from the UK. Different professions sometimes used different recipes too (I have one from one of my great-grandfathers; he was a railroad patternmaker so it uses some of the old steam engine oils). Ive even seen one that calls for bunker oil.
All contain some sort of oil, a grease, and a wax. The oils are usually neatsfoot oil, codliver oil, shark oil, whale oil, turtle oil, etc. The grease is usually tallow or lanolin; sometimes both: goose grease is common in the UK recipes. This was usually beeswax but I've also seen various microcrystaline waxes, soy wax, bayberry wax, Japan wax, spermaceti wax, montan wax, and a couple of oddballs.
Some recipes contain carbon (lampblack or similar) for color. Some recipes are even saponified.
(Yeah, this was a rabbit-trail I wandered down while working on lubes for BPCR.)