It's certainly true that collecting the data all together in one place has sort of been done in various books but the one I have (How to Build and Power Tune Weber and Dellorto Carburettors) focuses on some models better than others and there are some gaps in the info too.
The DCNF thing is because they are more compact than the IDF and there's not much space in the V of the 24 valve Alfa engine. I understand from somewhere that they may not be quite as good as the IDA or IDF. Don't know much about them as I've only ever had Dellorto DHLA before on another car.
As you say, there do seem to be myths and half truths around. Basic venturi sizes and main jets seems to be fairly well served but the finer points of progression holes, emulsion tubes, accelerator pumps and setting up/diagnosis seems not so clear.
Are you after basic jet stuff for engine size and rpm or are you trying to make something of a master table of as much reliable info of any type as you can find? The latter I suspect. Could start by collating existing info in books like the one above and also from other places like Guy Croft, The Fiat Page
, specialist forums for Lambos, Lancias, Ferraris, Porsche, VW.
Going to be a big job and after that I suppose there's no substitute for hands-on experience. I'm no expert by any manner of means though I'd be happier with SU carburettors. Only done a little with the DHLAs (which I really quite like even though I've not had the chance to compare with equivalent Weber or Solex types.