If Fuji lenses only, I would go with the original 4 : 14/2.8, 18/2.0, 35/1.4, 60/2.4. #2 and #4 in this list are very underrated. They do bring what we are looking for in vintage lenses
If we allow Voigtlander in the list, then my list would be : 14/2.8, Voigt 23/1.2, 60/2.4 and the wonderful 70-300