When boiling potatoes, most guidance is to heavily salt the water which in turn internally seasons the potatoes. When it comes to steamed potatoes, I’ve achieved fine results salting after they’ve steamed. I’m wondering if seasoning or marinating the potatoes in advance of steaming would be better. What is the best way to achieve flavorful results when steaming potatoes? Edit: for context, I am tossing russet potatoes into the steamer basket of a rice cooker while the rice cooker cooks white rice. I typically cut the potatoes in halves or quarters to ensure they fit. I keep the skin on. 
I had a lot of steamed potatoes growing up, but it's almost always seasoned afterwards with sauces. I find it's a good alternative to boiling, as you still get the moist texture, but it's much harder to overcook. If you season the water, it might not work for some types of seasoning (e.g. salt), therefore marination will probably work better:  Increase the marination time to overnight. Increase the surface area (e.g. cut them into thick slabs instead of large chunks, cut grooves, poke holes, etc.)  