Following combos produce the best sounding board for me:
Switch: filmed Cream (linear) or Holy Panda
Lube: 205g0
Plate: POM
Case: Aluminum (heavier the better)
Foams: plate foam only
Keycap: ePBT (harder plastic the better)
Mounting matters but foams even out the sound decently and cuts down on undesirable noise at the cost of reduced sound volume but POM plate makes up for some of that.