Add the drained diced tomatoes and green chilies, whole San Marzano tomatoes, cilantro, onion, garlic, jalapeño, cumin, kosher salt, sugar, and lime juice to a blender or food processor.
Pulse or blend until the salsa reaches your preferred restaurant-style consistency. For a smoother salsa, blend a little longer. For a chunkier salsa, pulse just until combined.
Taste and adjust if needed, keeping in mind the flavor will change and develop as the salsa chills. Don't add too much salt yet.
Transfer the salsa to an airtight container and refrigerate for at least 12 hours before serving. For the best flavor, make it 1–2 days ahead.
Serve chilled with tortilla chips, tacos, burrito bowls, quesadillas, eggs, or anything that needs a little salsa moment.