Place all potatoes in a Dutch oven; add water to cover. Bring to a boil. Reduce heat; cook, uncovered, 10-15 minutes or until tender. Drain; transfer to a large bowl.
Drizzle potatoes with stock and wine; toss gently, allowing liquids to absorb.
In a small bowl, whisk vinegars, mustards, salt and pepper. Gradually whisk in oil until blended.
Add vinaigrette, vegetables, bacon and herbs to potato mixture; toss to combine. Sprinkle with sesame seeds.