A fresh RASS knocked me out a few years ago. Fresh Quintero's, especially the Panatella, can be strong (even though the Panatella has no ligero).

However, such full cigars are also generally quite tannic when young, so, while the body is stronger, I wouldn't recommend it.

In general, Cubans derive burn from volado (bottom leaves), taste from seco (middle leaves), and strength from ligero (top leaves). There aren't any that use different ligero's for all of the filler AFAIK - the base of the flavour is from seco.

Note that Nic strength is greatly affected by processing (fermentation removes nicotine, for
example).

The top (strongest) ligero leaves used to be thrown out, but now they find their way onto Cohiba Maduro 5 and the annual LE's. However, the leaves are used for wrapper, not filler, so are processed differently.

YMMV