Goombay Smash

Recipes for this drink vary slightly, but are mostly pretty close, primarily varying in ratios and in some cases using Triple Sec or Orange Curacao. The original recipe calls for "dirty Jamaican rum", so something with some funk to it and probably moreso than most Appleton Estate rums. On the Difford's Guide page for this drink, there are recommendations for using some 151 Demerara rum and I definitely think that (or even a non-151 Demerara) would add to it. Difford himself says in the comments that he recommends a British Navy Style rum. That tends to mean a Demerara or Demerara/Jamaican blend.