Healthcare, Tech (Intel, HP, Oracle), Grocery Store Chains (Safeway, Raleys/Bel Air, Nugget Markets, Whole Foods ect ect) we have a handful of upper end Retail Centers/Malls that are big employers in the greater sac Area for retail. Food Services. Several well established Car Dealerships employ a large number of sac area residents. Every investment chain I know of (eTrade, Merrill Lynch ect) and many private firms thrive in our area. Several power house Legal Firms have made Sacramento and surrounding areas home to their offices.
And as you mentioned a majority is a Mortgage Banking/Real Estate/Builder based economy. All of which have made our Sacramento area one of the few BUBBLES in our country that have got back on track since the 2007 collapse and have formed a stable market place that allows ALL industries in our area to prosper.