I suspect your 2 potato recipe will have sweet potato in it which I have recently introduced dad to and he will eat it though of course he is more familiar with the normal potato.
Dad comes from the era in Britain where every meal you had potato in one form or another be it mash, roast, baked or just boiled.
You guess rightly. It has sweet potato and Russets. And Gruyere. It was GOOD.
Oh, I love boiled potatoes, especially with meatloaf. It has taken me many years but I have finally gotten away from potatoes with every meal.