Hi Seth, here are both ends of a "near new" Christian Oerter rifle ramrod from 1774, and I've seen the same tips on several other Oerter rifles. Records mention "brass loops" on the loading end of ramrods, from the German tradition of bone, but now brass, for strength. The small end of rods carried either a "single or double scraper" or tow worm, which probably meant single or double tines. Reversible tow worms are sometimes mentioned.
The approach varied considerably, with the iron tip for worm very common on the small end, but often the loading end flared as large as possible, might be cupped but left plain wood. Like so many questions, you need to study time and location, and the variety that we find. Bob