In Moonshine Haze u will find many C5 smells (citrus incense.)
For incense go on Sensi Seeds and White label. This is the company i found most incense phenos of all i grow. 1 pheno of White Widow White label lots of guys think that is its haze it was smell and taste like incense,musky,lemony pine. Very good also in skunk kush from sensi i found 1 incense pheno straight Frankincense. Also in Silver haze and NL5haze from sensi lots of incense phenos. For cheese phenos grow sensi skunk. I dont know people nowdays are say that sensi and white label are shit but i dont know which seeds they grow. Everithing i grew from them it is good. Also the Flying dutchman seeds. I think u will found lots of incense phenos in these seeds. Maybe people want that names nowdays in super skunk from sensi wl u will find lots of cheese phenos but lots of people nowdays want that their strain is called cheese,Lamborghini,bugatti and that names...Sensi,WL,TFD is NO1 for that frankeincese smells try their hazes and always take 1 pack more. Also in Soma seeds Amnesia Haze which is S1 of core cut x g13haze also very unique incense smells like incense musky oregeno rosemary my personal favorite on 12+ weeks phenos. This is what i knew for incense.
Tried NL5xHaze from sensi seeds a few years ago, no frankincense whatsoever. The fact that you are finding this trait so frequently, in things like widow and skunk leads to suspect we are not taking about the same thing. we are taking about a terpene profile that produces a particular aroma or flavour in the smoke - perhaps you mean an aroma of the buds? unburnt?