I didn't mean to give you a hard time, though in retrospect, this thread has a very hostile atmosphere to it, to which I also contributed - even though I did not view your list as an attack on our rank system, like some others...
In any case, here's my attempt at a list, more or less off the top of my head, and with "modern" spelling.. I like the "old" ones, but since they are ultimately the result of a lack of any attention to or regulation for proper spelling, there's no way of being definite with them.
(Regimental rank is retained when assigned army rank, just like Company rank is retained when assigned battalion rank)
COs/Regiment (since there are almost only single-battalion-regiments during this period, there is no real practical distinction between regimental and battalion rank)
(Regimental/Battalion staff personnel usually is treated as holding a certain CO rank, but does not hold a commission)
COs/Company (or squadron)
- Lieutenant-Captain (somewhat tricky, as technically speaking, the owner of this rank is still commissioned as a Lieutenant, though he is senior to "normal" Lieutenants and does draw higher pay.)
- Ensign/Second-Lieutenant/Cornet (depending on the branch of service)
This is where it gets tricky, since these are less clearly regulated, and differentiation between rank and appointment is hard to make.
That leaves us with just Sergeant and Corporal as definite company NCO ranks, with the rest (as listed above by O'Brian) being dependant in their exact status on regimental/unit tradition and preferences.