I don't have a favorite; at least not yet.
However I am interested in using the appropriate lubricants for the job and thought the historical lubes would be a good starting place for the specs were. See
Oil, Lubricating Preserving, Original - The Carbine Collector's Club
If you skim to my March 29 post you'll see that by 1944 FM the Army was recommending different lubes for different situations. Its probably not surprising that guidance is very much in line with what DaveHH and USABaker do based on their training and years of experience. Thank you!