Just about all the paper formulas I know of use both. The one I use most for commercial work is 2.7 grams metol, 40 grams sod. sulfite, 10.6 grams Hydroquinone, 87 grams sod. carbonate, 0.8 grams Pot Bromide. Makes a liter of stock and dilutes 1:2 and lasts all day.

D-23 does indeed utilize only 7.5 grams metol and 100 grams sodium sulfite in a liter working solution. I have never tried it. But I will point out that the divided developers all store the developing agents in solution with sodium sulfite. The sodium carbonate is kept in solution by it's self. far as I know.