This is a great resource for grill id. You'll note that it helps to know what stamp the grill is on. Certain stamps are known with only a limited number of grill types. This helps as it limits the number of possibilities. Can we see the stamps these grills are on?
Looks like this should be pretty straightforward. Just count the vertical rows and you'll get the right answer. If its 12,15,13,12,12 you've got F,D,E,F,F in the order you've posted this time. That would make the Scott numbers 86, 84, 91, 98, 97. It's a nice collection of stamps. Please don't go by catalog prices for this. Some are nicely centered and have mostly face-free cancels and some, not so much. If the Jackson certifies as a 84, if should sell for a few hundred dollars for sure (assuming no non-obvious faults) but nowhere near the $4750 catalog price (check Siegel power search). Congratulations on a nice set of grills.