I typically use 'whatever arrows I have laying around' from loot, with the exception of bosses and the harder enemies for the tier I'm at (so trolls when I was at black forest, abominations when I was at the Swamp tier, etc.). For those harder enemies, I use whatever is the 'best' arrow I can make for the job, leveraging resistances, etc.

If I used the bow a lot outside of hunting (for which I just use wood arrows), I'd probably have to craft arrows more often, at which point I'd use whatever was decent and not a lot of gathering time to get materials for, but so far I guess I haven't used the bow all that much, seeing as I have a chest half-full of different types of looted arrows.