Hello and welcome!
The most of the producers under here, have rums that are rather sweet in most of their products:
•Zacapa
•Diplomatico
•Cartavio
To name a few
Hi, I could tell you to taste :
RX1 : plantation XO Barbade rum sweetened
RX17278 Sealander : a rum with taste… and sweet. Uncommon blend for a sweet one.
RX244 & friends (RX135, RX1595) which are all good sweetened rums from south america.