You may want to check out the product recommendations on the new lds.org website. The link is here. You may notice that the first two long term storage items that they list are grains and legumes. Those are followed by this quote:
You may also want to add other items to your longer-term storage such as sugar, nonfat dry milk, salt, baking soda, and cooking oil. To meet nutritional needs, also store foods containing Vitamin C and other essential nutrients.
There are many websites and philosophies of "experts" giving you a large list of items that "you should store" --- but I feel that there is safety in following the modern day prophets and what they recommend. Prayerfully consider the many quotes found on lds.org about why the prophets recommend wheat and the importance of purchasing basics first- then when you have those basics feel free to add other items to your long term storage.
