For traditional (ie: not infused or flavored), besides the Baccarat that Bob mentioned, the Professor Sila from Cigars International is another mild cigar with a sweetened cap.
For infused or flavored cigars you have a slew of offerings from Drew Estate: Java, Tabak Especial, Isla del Sol, some of the ACID cigars. The CAO Flavors line from CAO.
A number of the Drew Estate Natural line cigars also have sweetened tips.
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Apparently I smoke like a girl, so I'll chime in (mostly to repeat and summarize what others have said).
Sweet:
- Baccarat: Sweet, mild, a good baseline.
- Baccarat Maduro: Similar to some of the Drew Naturals.
- Diamondback: Similar to Baccarat.
- Professor Sila: CI exclusive, similar to Baccarat, though slightly sour aftertaste.
- Pai Gow: Famour Smokes exclusive, very similar to Pro. Sila including aftertaste.
- Flor de Oliva Natural: Less sweet on the tip and more sweet in the tobacco... very pipey, one of my favorites and very reasonably priced.
- Naturals by Drew: Aromatic and pipey, I like Dirt, Dirt Torpedo, Clean Robusto, didn't like Root or Root Deluxe which were not sweet tip.
- Pirata Piquenos: Rough rolled, sweet tip, good 20-30 min smokes in tins of 8.
Infused:
- Acid: Lots of different profiles and plenty written about each. Blondie Belicoso is my favorite so far. Didn't care for Madre.
- Java: Coffee infused, slightly sweetened, really liked the mint.
- Tabak Especial: Similar to Java. The few I've had have been somewhat loosely rolled.
- Isla del Sol: Another coffee infused from Drew, but lower quality overall than Java and Tabak.
- Oliveros Gold Cognac- EXTREMELY strong cognac infusion.
Flavored:
- Erin Go Braugh: Mild, slight Irish Creme flavor and sweetness.
- CAO Flavors: Strong flavoring that can sour towards the end. Eileen's Dream is a favorite of mine.
- Cuban Honeys: Mild, medium sweetness and flavoring.
- Oliveros Platinum Sweet: Medium body box-press, syrupy sweetness.
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