Some are for carpentry, some for limbing, a few for felling, a couple for splitting, a few hatchets (most are in bad shape from 30-40 years of neglect before we took over the farm) and a couple of strange ones for marking trees (farm symbol on one end, hatchet head). I don't use the specialized axes much since I'm not building log houses and usually mark the trees I'm going to cut down with marker bands
I mostly use a few older limbing and felling axes that I've restored and a newer Wetterlings splitting ax and hatchet. Since I can hand pick them that compensates for their lesser QC when compared to more expensive GB axes (I also regrind most of them to get the edges I want)