Basically Coal, Diamond, Redstone, Lapis Lazuli, Emerald and Nether Quartz. It just makes sense, and it gives more use for the Iridium Drill's silk touch mode.
Suggested yields; All give 2 Crushed Ore of their respective type.
For coal, the washer yield could be either a tiny sulfur dust in addition to clean crushed ore, or two tiny coal dusts. Thermal Centrifuge yield would be the other thing.
Diamond could just be tiny diamond or normal coal dust, either one in either washer or centrifuge. Or centrifuging could just give a straight diamond, instead of dust.
Redstone, I'm not sure what it should yield as a by-product. Either sulfer, silicon dioxide, or lithium seem like fine candidates. Or just more redstone, or possibly iron. It should also be noted that the ore yields an average of 4.5 dust per ore without fortune, so 8-10 total redstone yield per macerated ore would be a good yield.
Nether quartz could, obviously, give lithium as a byproduct.
etc.
Also, since smelting the crushed ores wouldn't make sense, but you may want to not process them through the ore washer or centrifuge, you could just send it through the macerator again for no byproducts, but still double yield.