Yes, same type. Just about size and the time to Harvest.
I have a good blog about baby potatoes/new potatoes to read in English: https://simplegardenlife.com/plant-grow-new-potatoes/
You can use your fav/comfort sauce to your taste. Peanut butter or tahini sauce or just pick up best sauce for your French fries there 😊
That's a nice guide! I'm reading it right now and I'll try my French fries with tahini sauce. Sounds good.