What are the sweetest alcoholic drinks?

Could you please elaborate on the topic of the sweetest alcoholic drinks? I'm particularly interested in understanding which beverages stand out as the most sugary and indulgent among the various alcoholic options available. Are there any specific types of cocktails or liquors that are renowned for their exceptional sweetness? Perhaps you could also share some insights into the reasons why these drinks are so sweet, as well as any recommendations you might have for someone looking to try out some of the sweetest alcoholic beverages.