What plants and herbs are similar enough to share NFT system?

Hi all, I'm in the process of building a multi level nft system for the purpose of growing vegetables and herbs.. there will be two different reservoirs both with different runs. So my question is what herbs and vegetables have such similar nutrient requirements that they could be run off the same reservoir? From what I've gathered herbs are much of a muchness and I could run a herb garden off one of the reservoirs.. I was thinking maybe lettuce and something else in the other.. any suggestions??

I've grown Lettuce in a DWC system before. Anything with plenty of Nitrogen works great. Lettuce will produce great results in any hydro set-up I'm sure. I read somewhere that it take 1/3 of the time to produce a head of lettuce using hydroponics, compared to using soil.