One popular style of tang that I have seen on many southern mountain rifles is the "spear" or "pointed" shape. Most are not extremely long but the one on this Mathew Gillespie rifle is 3 7/8".
Others often are much wider in the mid-section giving the tang a "spear" shape.
Another lollipop style looks much like a regular flared tang with a smaller straight section coming off the end of the flare then at the end there is the standard round lollipop/dolls head or even a heart shaped end. Here is an example:
On this particular one the flared "fan tail" is not so obvious but on others that I have seen the flared part is wider, can't find a photo of one right now.
Dennis