The Dell and the 5th at Painswick are not "Alps" holes to me. A blind par-3 should be a separate category if you can find room for it ... call it the Maiden category after the original.
I think my final four here would be the original at Prestwick, the 3rd at National Golf Links, the 13th at Rye [which no one has mentioned yet], and maybe the 16th at Old Macdonald if nobody comes up with a better fourth. I love St. Enodoc, but the sixth there is not a better Alps than any of the above. If a blind second shot on a par-5 counts in this category, then throw in the 7th at Ekwanok.
If we'd gotten to build the Farm course at Cape Kidnappers, the Alps hole there woulda been a contender.