Mustard: First, it has no added sugar. Also, mustard seed itself is a source of powerful antioxidants. In addition to the antioxidants in the mustard seed, most yellow mustards also contain turmeric (one of the healthiest anti-cancer spices) and paprika, which both contain powerful antioxidants as well!
Guacamole: Lots of healthy fats (that satisfy your appetite and regulate hormone balance), lots of fiber, and plenty of vitamins, minerals, and antioxidants.
Salsa: It almost never has added sugars if you get a good brand. Salsa is mostly just vegetables so it's hard to go wrong. And if you're a ketchup lover and want to reduce your sugar intake, just try salsa instead for a much healthier option. Salsa on a burger is just as delicious as ketchup on a burger. Just remember that the corn chips that people generally cram down their throats with salsa are NOT even close to healthy. Corn chips are almost always fried in a heavily refined omega-6 oil such as corn or soy oil, and are inflammatory. Plus, most corn used for corn chips is genetically modified. Organic corn chips are a small step in the right direction (this ensures it's not GMO corn).
Hummus: Is mostly just chickpeas, tahini, garlic, lemon, and olive oil, and is easily one of the healthiest condiments or as a separate snack by itself. The main thing to look for when buying a good hummus is to make sure it's made with olive oil and NOT soybean or canola oil. Unfortunately most brands use cheap soy or canola oil, but if you're a label reader, it's easy to find a brand that uses solely olive oil.
Pesto: Is generally a mashed mix of garlic, pine nuts, basil, olive oil, and grated cheese. It's a great source of healthy fats and also powerful antioxidants, mostly from the garlic and basil, but to some extent from the pine nuts and olive oil too. Pesto goes incredibly well with sandwiches, on meat dishes, or surprisingly, even on eggs.