Yes, grout and caulking need to be included. There is no specific category for them, however. Projects have successfully used ceramic tile adhesive—VOC limit 65g/l—and Architectural Sealant—VOC limit 250 g/l—successfully, the latter being especially appropriate if you are using a product other than ceramic tiles. Since most mortars, grouts, and thinsets are largely cementitious, with inherently low VOC content, they will comply under most categories, anyway. Choose a logical category and explain it in a narrative if necessary.