Do Chili peppers or Vanilla beans exist :)? I was messing around on my chef and those were the only two mats in the first 4 lines I was missing. 4 or 5 of each would help me to discover any missing recipes I would think.
I think you will be short (unless you farm a fair bit) if you do things that require like mats. I, for example, have Artificer on my Main Mesmer (Tailor as a placeholder and not leveling now) Jeweler and Armorsmith on my Guardian alt and Chef on my Engineer Alt. Bit of over lap with Artificer and Armorsmith, but my Arti is about 150 levels higher, so there actually is no overlap.
In short, trying to level like crafts can leave you very short, making it hard to discover recipes, the most efficient way to level a craft.